Liabilities / Assets
85th percentile
Higher debt load relative to assets than 85% of similar nonprofits.
EIN 46-3952689 • 501(c)3 • Duluth, MN
Profile
Many rivers montessori enrolls students from 16 months through 8th grade. Many rivers montessori empowers its students to transform the world. Through world-class montessori education, a focus on the whole child, and an inclusive and fun community, many rivers montessori cultivates independent, academically prepared, and socially responsible citizens who will be lifelong learners and creative problem solvers.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
85th percentile
Higher debt load relative to assets than 85% of similar nonprofits.
Liabilities / Revenue
86th percentile
Higher debt load relative to revenue than 86% of similar nonprofits.
Net Margin
51st percentile
Higher net margin than 51% of similar nonprofits.
Top Officer Pay
83rd percentile
Higher top officer pay than 83% of similar nonprofits.
Top officer pay equals 4.5% of source-year revenue.
Asset Growth
48th percentile
Faster asset growth than 48% of similar nonprofits.
Revenue Growth
42nd percentile
Faster revenue growth than 42% of similar nonprofits.
Assets
Up$4,051,462
Up $16,964 (+0.4%) from 2024
Liabilities
Down$2,376,054
Down $115,869 (-4.6%) from 2024
Net Assets
Up$1,675,408
Up $132,833 (+8.6%) from 2024
Revenue
Up$2,848,385
Up $151,111 (+5.6%) from 2024
Expenses
Up$2,715,552
Up $205,222 (+8.2%) from 2024
Net Income
Down$132,833
Down $54,111 (-29%) from 2024
Most recent year
2025 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.
Many rivers montessori enrolls students from 16 months through 8th grade. Many rivers montessori empowers its students to transform the world. Through world-class montessori education, a focus on the whole child, and an inclusive and fun community, many rivers montessori cultivates independent, academically prepared, and socially responsible citizens who will be lifelong learners and creative problem solvers.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $3,816,539 | $3,740,529 | ▼ $76,010 |
| Cash and Non-Interest-Bearing Accounts | $189,408 | $286,076 | ▲ $96,668 |
| Prepaid Expenses and Deferred Charges | $14,286 | $12,576 | ▼ $1,710 |
| Intangible Assets | $11,492 | $9,768 | ▼ $1,724 |
| Accounts Receivable | $2,773 | $2,513 | ▼ $260 |
| Total Assets | $4,034,498 | $4,051,462 | ▲ $16,964 |
| Liabilities | |||
| Mortgage Notes Payable Secured by Investment Property | $2,052,819 | $1,992,281 | ▼ $60,538 |
| Deferred Revenue | $299,574 | $239,271 | ▼ $60,303 |
| Accounts Payable and Accrued Expenses | $139,530 | $144,502 | ▲ $4,972 |
| Total Liabilities | $2,491,923 | $2,376,054 | ▼ $115,869 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $1,433,537 | $1,599,419 | ▲ $165,882 |
| Net Assets With Donor Restrictions | $109,038 | $75,989 | ▼ $33,049 |
| Total Net Assets Fund Balance | $1,542,575 | $1,675,408 | ▲ $132,833 |
| Total Liabilities and Net Assets / Fund Balance | $4,034,498 | $4,051,462 | ▲ $16,964 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Equipment | $3,218,581 | $897,895 | $4,116,476 |
| Buildings | $521,948 | $121,582 | $643,530 |
| Name | Title | Full / Part Time | Base | Total |
|---|---|---|---|---|
| Wendy Reinsch Fisher | Head of Scho | FT | $126,976 | $126,976 |
| Wendy Reinsch Fisher | Head of School | - | $126,976 | $126,976 |
| Name | Title |
|---|---|
| Matt Cartier | Chairperson, |
| Jennifer Lien | Vice Chair |
| Camille Hansen | Trustee |
| Carin Skoog | Trustee |
| David Barthel | Trustee |
| Grant Schluender | Trustee |
| Joel Vikre | Trustee |
| Mary Bliss Conger | Trustee |
| Nick Christensen | Trustee |
| Rob Fernandez | Trustee |
| Suzanne Niemi | Trustee |
| Jeff Engbrecht | Treasurer, T |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $2,060,676 |
| Other Expenses | $654,876 |
| Total Fundraising Expense | $41,935 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $1,645,943 | $107,343 | $35,781 | $1,789,067 |
| Payroll Taxes | $136,022 | $8,871 | $2,957 | $147,850 |
| Depreciation Depletion | $147,666 | - | - | $147,666 |
| Other Employee Benefits | $113,859 | $7,425 | $2,475 | $123,759 |
| Interest | - | $77,413 | - | $77,413 |
| All Other Expenses | $53,893 | $6,169 | $599 | $60,661 |
| Other Expenses | $45,619 | $3,372 | - | $45,619 |
| Insurance | - | $38,393 | - | $38,393 |
| Office Expenses | $15,640 | $15,025 | $123 | $30,788 |
| Fees for Services Accounting | $3,110 | $12,442 | - | $15,552 |
| Advertising | - | $12,346 | - | $12,346 |
| Fees for Services Legal | $1,550 | $6,200 | - | $7,750 |
| Total Functional Expenses | $2,374,469 | $299,148 | $41,935 | $2,715,552 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $2,763,793 |
| Expenses per Audited Statements | $2,715,552 |
| Total Expenses per Form 990 | $2,715,552 |
| Expenses Not Reported on Form 990 | $48,241 |
| Line Item | Amount |
|---|---|
| Fundraising Gross Income | $81,470 |
| Fundraising Direct Expenses | $48,241 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Grown Ups Got T | $77,186 | $77,186 | $48,241 | $28,945 |
| Total Events | $77,186 | $77,186 | $48,241 | $28,945 |
“Organization's process to review form 990 members of governing body meet and go over the form 990 upon its completion annually at the board meeting.”
“Conflict of interest policy was reviewed at annual board retreat and each member signed a copy of the policy. The board chair periodically referenced the policy during board meetings.”
“Governing documents disclosure explanation bylaws are posted on website but only available to parents, staff & trustees. Form 990 is the only financial document made available for the public.”
“Many rivers montessori enrolls students from 16 months through 8th grade. Many rivers montessori empowers its students to transform the world. Through world-class montessori education, a focus on the whole child, and an inclusive and fun community, many rivers montessori cultivates independent, academically prepared, and socially responsible citizens who will be lifelong learners and creative problem solvers.”
“Fundraising expenses 48,241 fundraising expenses -48,241”
“Fundraising expenses 48,241”
“Fundraising expenses 48,241”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 139530 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 144502 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 2773 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 2513 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | MANY RIVERS MONTESSORI ENROLLS STUDENTS FROM 16 MONTHS THROUGH 8TH GRADE. MANY RIVERS MONTESSORI EMPOWERS ITS STUDENTS TO TRANSFORM THE WORLD. THROUGH WORLD-CLASS MONTESSORI EDUCATION, A FOCUS ON THE WHOLE CHILD, AND AN INCLUSIVE AND FUN COMMUNITY, MANY RIVERS MONTESSORI CULTIVATES INDEPENDENT, ACADEMICALLY PREPARED, AND SOCIALLY RESPONSIBLE CITIZENS WHO WILL BE LIFELONG LEARNERS AND CREATIVE PROBLEM SOLVERS. |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 12346 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 12346 |
| IRS990/AllOtherContributionsAmt | 0 | 207617 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 599 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 6169 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 53893 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 60661 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BackupWthldComplianceInd | 0 | false |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | JEFF ENGBRECHT |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2184645570 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 110 W REDWING ST |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | DULUTH |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MN |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 55803 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 189408 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 286076 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 283942 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 1629 |
| IRS990/CYOtherExpensesAmt | 0 | 654876 |
| IRS990/CYOtherRevenueAmt | 0 | 146484 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 2416330 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 132833 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 2060676 |
| IRS990/CYTotalExpensesAmt | 0 | 2715552 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 41935 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 2848385 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 299574 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 239271 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 147666 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 147666 |
| IRS990/Desc | 0 | CHILD CARE IN A MONTESSORI ENVIRONMENT. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 109038 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 75989 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 56 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 68262 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 12442 |
| IRS990/FeesForServicesAccountingGrp/ProgramServicesAmt | 0 | 3110 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 15552 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 6200 |
| IRS990/FeesForServicesLegalGrp/ProgramServicesAmt | 0 | 1550 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 7750 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/FormerOfcrDirectorTrusteeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | WENDY REINSCH FISHER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | DAVID BARTHEL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | MATT CARTIER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | NICK CHRISTENSEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | MARY BLISS CONGER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | JEFF ENGBRECHT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | ROB FERNANDEZ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | CAMILLE HANSEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JENNIFER LIEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | SUZANNE NIEMI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | GRANT SCHLUENDER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | CARIN SKOOG |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | JOEL VIKRE |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 126976 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | HEAD OF SCHO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | CHAIRPERSON, |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TREASURER, T |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | VICE CHAIR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | TRUSTEE |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 2013 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | true |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingDirectExpensesAmt | 0 | 48241 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 81470 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 14 |
| IRS990/GovernmentGrantsAmt | 0 | 76325 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 2896626 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 14 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 38393 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 38393 |
| IRS990/IntangibleAssetsGrp/BOYAmt | 0 | 11492 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 9768 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 77413 |
| IRS990/InterestGrp/TotalAmt | 0 | 77413 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 1629 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 1629 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 1019477 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 3816539 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 3740529 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 4760006 |
| IRS990/LegalDomicileStateCd | 0 | MN |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | MANY RIVERS MONTESSORI ENROLLS STUDENTS FROM 16 MONTHS THROUGH 8TH GRADE. MANY RIVERS MONTESSORI EMPOWERS ITS STUDENTS TO TRANSFORM THE WORLD. THROUGH WORLD-CLASS MONTESSORI EDUCATION, A FOCUS ON THE WHOLE CHILD, AND AN INCLUSIVE AND FUN COMMUNITY, MANY RIVERS MONTESSORI CULTIVATES INDEPENDENT, ACADEMICALLY PREPARED, AND SOCIALLY RESPONSIBLE CITIZENS WHO WILL BE LIFELONG LEARNERS AND CREATIVE PROBLEM SOLVERS. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 2052819 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 1992281 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 1542575 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 1675408 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 33229 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 1433537 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 1599419 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 123 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 15025 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 15640 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 30788 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 2475 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 7425 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 113859 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 123759 |
| IRS990/OtherExpensesGrp/Desc | 0 | REPAIRS AND MAINTENANCE |
| IRS990/OtherExpensesGrp/Desc | 1 | CLASSROOM SUPPLIES |
| IRS990/OtherExpensesGrp/Desc | 2 | UTILITIES |
| IRS990/OtherExpensesGrp/Desc | 3 | EVENT AND FIELD TRIPS |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 4149 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 3372 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 78828 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 68262 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 64077 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 45619 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 82977 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 68262 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 67449 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 45619 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISCELLANEOUS INCOME |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 113255 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 113255 |
| IRS990/OtherRevenueTotalAmt | 0 | 113255 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 35781 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 107343 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 1645943 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 1789067 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 2957 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 8871 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 136022 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 147850 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 14286 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 12576 |
| IRS990/PrincipalOfficerNm | 0 | MATT CARTIER |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | SCHOOL TUITION |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | CHILD CARE |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 2198020 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 218310 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 2198020 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 218310 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | MONTESSORI SCHOOL OPERATING PRE-K TO 8TH GRADE. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 2306207 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 262915 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 18540 |
| IRS990/PYOtherExpensesAmt | 0 | 610207 |
| IRS990/PYOtherRevenueAmt | 0 | 105447 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 2310372 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 186944 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 1900123 |
| IRS990/PYTotalExpensesAmt | 0 | 2510330 |
| IRS990/PYTotalRevenueAmt | 0 | 2697274 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 132833 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990ScheduleA/SchoolInd | 0 | X |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt | 0 | RESTRICTED |
| IRS990/ScheduleBRequiredInd | 0 | true |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 521948 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 121582 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 643530 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 3218581 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 897895 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 4116476 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 48241 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 2715552 |
| IRS990ScheduleD/OtherExpensesIncludedAmt | 0 | 48241 |
| IRS990ScheduleD/OtherRevenueAmt | 0 | 48241 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 48241 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 2848385 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | FUNDRAISING EXPENSES 48,241 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | FUNDRAISING EXPENSES 48,241 |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | SCHEDULE D, PAGE 4, PART XI, LINE 2D |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | SCHEDULE D, PAGE 4, PART XII, LINE 2D |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 3740529 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 2715552 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 2848385 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 2896626 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 2763793 |
| IRS990ScheduleE/ComplianceWithRevProc7550Ind | 0 | true |
| IRS990ScheduleE/DiscriminateRaceAdmissPlcyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceAthltProgInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceEducPlcyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceEmplmFcultyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceOtherActyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceSchsInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceStdntsRghtsInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceUseOfFcltsInd | 0 | false |
| IRS990ScheduleE/GovernmentFinancialAidRcvdInd | 0 | true |
| IRS990ScheduleE/GovernmentFinancialAidRvkdInd | 0 | false |
| IRS990ScheduleE/MaintainCpyOfAllSolInd | 0 | true |
| IRS990ScheduleE/MaintainCpyOfBrochuresEtcInd | 0 | true |
| IRS990ScheduleE/MaintainRacialCompRecsInd | 0 | true |
| IRS990ScheduleE/MaintainScholarshipsRecsInd | 0 | true |
| IRS990ScheduleE/NondiscriminatoryPolicyStmtInd | 0 | true |
| IRS990ScheduleE/PlcyPblczdViaBroadcastMediaInd | 0 | true |
| IRS990ScheduleE/PolicyStmtInBrochuresEtcInd | 0 | true |
| IRS990ScheduleE/SupplementalInformationDetail/ExplanationTxt | 0 | YES; THIS POLICY IS PUBLISHED ANNUALLY IN THE DULUTH NEWS TRIBUNE NEWSPAPER AND IS STATED ON THE ENROLLMENT FORM AS WELL AS THE ORGANIZATIONS WEBSITE. ALSO IT IS DISCLOSED IN OTHER AREAS AS WELL. NONDISCIMINATION AND DIVERSITY ACCEPTANCE ARE CORE PRINCIPALS THAT THE MONTESSORI SCHOOL EMBRACES/VALUES. |
| IRS990ScheduleE/SupplementalInformationDetail/ExplanationTxt | 1 | STATE OF MINNESOTA "NONPUBLIC PUPIL AIDS' AT CURERNT PER PUPIL RATE FOR K-8 GRADES AND FUNDS INDIVIDUAL INSTRUCTION MATERIAS & HEALTH SERVICES. NO MONEY IS FUNDED DIRECTLY TO THE SCHOOL BUT THE MATERIALS AND SERVICES ARE PROVIDED. MRM HAS RECIEVED DIRECT FUNDING FROM MN DEPARTMENT OF EDUCTION FOR COVID RELATED PROGRAMS. |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | SCHEDULE E, LINE 3 |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | SCHEDULE E, LINE 6 |
| IRS990ScheduleG/FundraisingEventInformationGrp/DirectExpenseSummaryEventsAmt | 0 | 48241 |
| IRS990ScheduleG/FundraisingEventInformationGrp/Event1Nm | 0 | GROWN UPS GOT T |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsEvent1Amt | 0 | 77186 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsTotalAmt | 0 | 77186 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueEvent1Amt | 0 | 77186 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueTotalEventsAmt | 0 | 77186 |
| IRS990ScheduleG/FundraisingEventInformationGrp/NetIncomeSummaryAmt | 0 | 28945 |
| IRS990ScheduleG/FundraisingEventInformationGrp/OthDirectExpnssTotalEventsAmt | 0 | 48241 |
| IRS990ScheduleG/FundraisingEventInformationGrp/OtherDirectExpensesEvent1Amt | 0 | 48241 |
| IRS990ScheduleJ/AnyNonFixedPaymentsInd | 0 | false |
| IRS990ScheduleJ/CompBasedOnRevenueOfFlngOrgInd | 0 | false |
| IRS990ScheduleJ/CompBsdNetEarnsFlngOrgInd | 0 | false |
| IRS990ScheduleJ/CompBsdNetEarnsRltdOrgsInd | 0 | false |
| IRS990ScheduleJ/CompBsdOnRevRelatedOrgsInd | 0 | false |
| IRS990ScheduleJ/EquityBasedCompArrngmInd | 0 | false |
| IRS990ScheduleJ/InitialContractExceptionInd | 0 | false |
| IRS990/ScheduleJRequiredInd | 0 | true |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 126976 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | WENDY REINSCH FISHER |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | HEAD OF SCHOOL |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 0 | 126976 |
| IRS990ScheduleJ/SeverancePaymentInd | 0 | false |
| IRS990ScheduleJ/SupplementalNonqualRtrPlanInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | MANY RIVERS MONTESSORI ENROLLS STUDENTS FROM 16 MONTHS THROUGH 8TH GRADE. MANY RIVERS MONTESSORI EMPOWERS ITS STUDENTS TO TRANSFORM THE WORLD. THROUGH WORLD-CLASS MONTESSORI EDUCATION, A FOCUS ON THE WHOLE CHILD, AND AN INCLUSIVE AND FUN COMMUNITY, MANY RIVERS MONTESSORI CULTIVATES INDEPENDENT, ACADEMICALLY PREPARED, AND SOCIALLY RESPONSIBLE CITIZENS WHO WILL BE LIFELONG LEARNERS AND CREATIVE PROBLEM SOLVERS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | ORGANIZATION'S PROCESS TO REVIEW FORM 990 MEMBERS OF GOVERNING BODY MEET AND GO OVER THE FORM 990 UPON ITS COMPLETION ANNUALLY AT THE BOARD MEETING. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | CONFLICT OF INTEREST POLICY WAS REVIEWED AT ANNUAL BOARD RETREAT AND EACH MEMBER SIGNED A COPY OF THE POLICY. THE BOARD CHAIR PERIODICALLY REFERENCED THE POLICY DURING BOARD MEETINGS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | GOVERNING DOCUMENTS DISCLOSURE EXPLANATION BYLAWS ARE POSTED ON WEBSITE BUT ONLY AVAILABLE TO PARENTS, STAFF & TRUSTEES. FORM 990 IS THE ONLY FINANCIAL DOCUMENT MADE AVAILABLE FOR THE PUBLIC. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | FUNDRAISING EXPENSES 48,241 FUNDRAISING EXPENSES -48,241 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990 - ORGANIZATION'S MISSION |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PAGE 6, PART VI, LINE 12C |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PAGE 6, PART VI, LINE 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | FORM 990, PART XI, LINE 9 |
| IRS990/SchoolOperatingInd | 0 | true |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | MN |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
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