Liabilities / Assets
69th percentile
Higher debt load relative to assets than 69% of similar nonprofits.
EIN 93-0954555 • 501(c)3 • Portland, OR
Profile
To assist each student to reach his or her fullest potential with a love of learning & a profound sense of importance of his or her contribution to the world using the education method & philosophies of dr. Maria montessori.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
69th percentile
Higher debt load relative to assets than 69% of similar nonprofits.
Liabilities / Revenue
80th percentile
Higher debt load relative to revenue than 80% of similar nonprofits.
Net Margin
59th percentile
Higher net margin than 59% of similar nonprofits.
Top Officer Pay
63rd percentile
Higher top officer pay than 63% of similar nonprofits.
Top officer pay equals 6.2% of source-year revenue.
Asset Growth
46th percentile
Faster asset growth than 46% of similar nonprofits.
Revenue Growth
41st percentile
Faster revenue growth than 41% of similar nonprofits.
Assets
Up$5,962,056
Up $166,505 (+2.9%) from 2024
Liabilities
Down$1,884,154
Down $71,260 (-3.6%) from 2024
Net Assets
Up$4,077,902
Up $237,765 (+6.2%) from 2024
Revenue
Up$2,643,691
Up $73,917 (+2.9%) from 2024
Expenses
Up$2,405,926
Up $176,465 (+7.9%) from 2024
Net Income
Down$237,765
Down $102,548 (-30%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
To assist each student to reach his or her fullest potential with a love of learning & a profound sense of importance of his or her contribution to the world using the education method & philosophies of dr. Maria montessori.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Cash and Non-Interest-Bearing Accounts | $2,671,219 | $2,901,719 | ▲ $230,500 |
| Land, Buildings, and Equipment, Net | $2,938,563 | $2,868,584 | ▼ $69,979 |
| Savings and Temporary Cash Investments | $174,375 | $174,943 | ▲ $568 |
| Prepaid Expenses and Deferred Charges | $6,554 | $9,055 | ▲ $2,501 |
| Accounts Receivable | $4,840 | $7,755 | ▲ $2,915 |
| Total Assets | $5,795,551 | $5,962,056 | ▲ $166,505 |
| Liabilities | |||
| Mortgage Notes Payable Secured by Investment Property | $1,728,956 | $1,666,065 | ▼ $62,891 |
| Deferred Revenue | $208,000 | $204,245 | ▼ $3,755 |
| Accounts Payable and Accrued Expenses | $18,458 | $13,844 | ▼ $4,614 |
| Total Liabilities | $1,955,414 | $1,884,154 | ▼ $71,260 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $3,787,884 | $4,029,020 | ▲ $241,136 |
| Net Assets With Donor Restrictions | $52,253 | $48,882 | ▼ $3,371 |
| Total Net Assets Fund Balance | $3,840,137 | $4,077,902 | ▲ $237,765 |
| Total Liabilities and Net Assets / Fund Balance | $5,795,551 | $5,962,056 | ▲ $166,505 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Buildings | $2,184,000 | $2,030,188 | $4,214,188 |
| Land | $479,651 | - | $479,651 |
| Equipment | $148,863 | $213,717 | $362,580 |
| Leasehold Improvements | $52,756 | $66,612 | $119,368 |
| Other Land Buildings | $3,314 | - | $3,314 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Cathy Swan | Head of School | FT | $150,763 | $13,627 | $164,390 |
| Name | Title |
|---|---|
| Jane Forester | Past President |
| Shauna Pettit-brown | President |
| Matt Shipley | Vice President |
| Jeff Petrillo | Board Member |
| Sarah Gillette | Board Member |
| Eric Thompson | Secretary |
| Luisa Ponzi | Treasurer |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $1,681,831 |
| Other Expenses | $709,919 |
| Total Fundraising Expense | $99,295 |
| Grants and Similar Amounts Paid | $14,176 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $1,111,501 | $109,412 | $44,401 | $1,265,314 |
| Current Officers, Directors, Trustees, and Key Employees | - | $171,166 | - | $171,166 |
| Depreciation Depletion | - | $140,010 | - | $140,010 |
| Fees for Services Other | $54,997 | $59,849 | $14,719 | $129,565 |
| Payroll Taxes | $97,718 | $23,421 | $3,904 | $125,043 |
| Occupancy | $74,346 | $31,707 | $3,280 | $109,333 |
| Interest | $48,727 | $20,781 | $2,150 | $71,658 |
| Other Employee Benefits | $56,881 | $8,544 | $2,481 | $67,906 |
| Other Expenses | $26,079 | $67,084 | $2,815 | $67,084 |
| Pension Plan Contributions | $46,172 | $4,215 | $2,015 | $52,402 |
| All Other Expenses | $19,907 | $18,944 | $8,829 | $47,680 |
| Insurance | $2,369 | $35,940 | - | $38,309 |
| Grants to Domestic Orgs | $14,176 | - | - | $14,176 |
| Office Expenses | - | $4,330 | - | $4,330 |
| Total Functional Expenses | $1,601,171 | $705,460 | $99,295 | $2,405,926 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $2,463,248 |
| Expenses per Audited Statements | $2,405,926 |
| Total Expenses per Form 990 | $2,405,926 |
| Expenses Not Reported on Form 990 | $57,322 |
| Line Item | Amount |
|---|---|
| Fundraising Gross Income | $94,742 |
| Fundraising Direct Expenses | $57,322 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Auction | $94,742 | $94,742 | $57,322 | $37,420 |
| Total Events | $94,742 | $94,742 | $57,322 | $37,420 |
“Processes to review form 990: a committee consisting of the treasurer, the head of the school and the business administrator reviews and approves the form 990 prior to its filing. A copy of the form 990 is also provided to all the members of the governing board prior to filing.”
“Conflicts of interest: msb monitors and enforces compliance with the conflict of interest policy by asking the board members annually to disclose any conflict of interests by written questionnaire.”
“Compensation determination process: members of the board of directors are not compensated by msb. The compensation for the head of school is researched by the board of directors by comparing the same position among schools locally and nationally, taking into consideration the factor of cost of living and the performance of the administrator. The proposed compensation is discussed and approved by the board and is documented in the board minutes.”
“Reasonable requests for organizational forms 990 are available to the public upon request.”
“Reasonable requests for governing documents, conflict of interest policy and financial statements are available to the public upon request.”
“Fundraising expenses: $57,322”
“Fundraising expenses: $57,322”
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 | 18458 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 13844 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 4840 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 7755 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | TO ASSIST EACH STUDENT TO REACH HIS OR HER FULLEST POTENTIAL WITH A LOVE OF LEARNING & A PROFOUND SENSE OF IMPORTANCE OF HIS OR HER CONTRIBUTION TO THE WORLD USING THE EDUCATION METHOD & PHILOSOPHIES OF DR. MARIA MONTESSORI. |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 8829 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 18944 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 19907 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 47680 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BackupWthldComplianceInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | KELLY WARD - BUSINESS MANAGER |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 5034391597 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 11065 NW CRYSTAL CREEK LANE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | PORTLAND |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | OR |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 97229 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 2671219 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 2901719 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 171166 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 171166 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| 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 | 94298 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 14176 |
| IRS990/CYInvestmentIncomeAmt | 0 | 96734 |
| IRS990/CYOtherExpensesAmt | 0 | 709919 |
| IRS990/CYOtherRevenueAmt | 0 | 42992 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 2409667 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 237765 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1681831 |
| IRS990/CYTotalExpensesAmt | 0 | 2405926 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 99295 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 2643691 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 208000 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 204245 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 140010 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 140010 |
| IRS990/Desc | 0 | PROVIDED MONTESSORI EDUCATION FOR 177 STUDENTS. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 52253 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 48882 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 33 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 1601171 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 14719 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 59849 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 54997 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 129565 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 6 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 7 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.00 |
| 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/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 13627 |
| 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/PersonNm | 0 | CATHY SWAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | JEFF PETRILLO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | SARAH GILLETTE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | SHAUNA PETTIT-BROWN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | MATT SHIPLEY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | ERIC THOMPSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | LUISA PONZI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | JANE FORESTER |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 150763 |
| 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/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/TitleTxt | 0 | HEAD OF SCHOOL |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | PAST PRESIDENT |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 1977 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingDirectExpensesAmt | 0 | 57322 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 94742 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 7 |
| IRS990/GovernmentGrantsAmt | 0 | 94298 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 14176 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 14176 |
| IRS990/GrantsToIndividualsInd | 0 | true |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 2701013 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 7 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 35940 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 2369 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 38309 |
| IRS990/InterestGrp/FundraisingAmt | 0 | 2150 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 20781 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 48727 |
| IRS990/InterestGrp/TotalAmt | 0 | 71658 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 96734 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 96734 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 3 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 2310517 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 2938563 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 2868584 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 5179101 |
| IRS990/LegalDomicileStateCd | 0 | OR |
| 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 | TO ASSIST EACH STUDENT TO REACH HIS OR HER FULLEST POTENTIAL WITH A LOVE OF LEARNING & A PROFOUND SENSE OF IMPORTANCE OF HIS OR HER CONTRIBUTION TO THE WORLD USING THE EDUCATION METHOD & PHILOSOPHIES OF DR. MARIA MONTESSORI. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 1728956 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 1666065 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 3840137 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 4077902 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 37420 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 37420 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 3787884 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 4029020 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 3280 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 31707 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 74346 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 109333 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 4330 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 4330 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 2481 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 8544 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 56881 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 67906 |
| IRS990/OtherExpensesGrp/Desc | 0 | SUPPLIES |
| IRS990/OtherExpensesGrp/Desc | 1 | FOOD |
| IRS990/OtherExpensesGrp/Desc | 2 | MISC EXPENSES |
| IRS990/OtherExpensesGrp/Desc | 3 | GRANTS & CONTRIBUTIONS |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 236 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 14465 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 2 | 2815 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 3284 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 5686 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 1087 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 67084 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 35761 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 12537 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 26079 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 39281 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 32688 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 29981 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 67084 |
| IRS990/OtherInd | 0 | X |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | OTHER INCOME |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 5572 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 5572 |
| IRS990/OtherRevenueTotalAmt | 0 | 5572 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 44401 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 109412 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 1111501 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 1265314 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 3904 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 23421 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 97718 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 125043 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 2015 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 4215 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 46172 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 52402 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 6554 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 9055 |
| IRS990/PrincipalOfficerNm | 0 | SHAUNA PETTIT-BROWN |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611600 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | TUITION & FEES |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 2409667 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 2409667 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 64236 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 12002 |
| IRS990/PYInvestmentIncomeAmt | 0 | 60535 |
| IRS990/PYOtherExpensesAmt | 0 | 653607 |
| IRS990/PYOtherRevenueAmt | 0 | 72143 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 2372860 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 340313 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 1563852 |
| IRS990/PYTotalExpensesAmt | 0 | 2229461 |
| IRS990/PYTotalRevenueAmt | 0 | 2569774 |
| IRS990/QuidProQuoContributionsInd | 0 | true |
| IRS990/QuidProQuoContriDisclInd | 0 | true |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 237765 |
| 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 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 174375 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 174943 |
| 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 | 2184000 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 2030188 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 4214188 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 148863 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 213717 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 362580 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 57322 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 2405926 |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 479651 |
| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 479651 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/BookValueAmt | 0 | 52756 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/DepreciationAmt | 0 | 66612 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/OtherCostOrOtherBasisAmt | 0 | 119368 |
| IRS990ScheduleD/OtherExpensesIncludedAmt | 0 | 57322 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 3314 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 3314 |
| IRS990ScheduleD/OtherRevenueAmt | 0 | 57322 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 57322 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 2643691 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | FUNDRAISING EXPENSES: $57,322 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | FUNDRAISING EXPENSES: $57,322 |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part XI, Line 2d-Other revenue included on Sch D but not on 990 |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Part XII, Line 2d-Other expenses included on Sch D but not on 990 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 2868584 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 2405926 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 2643691 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 2701013 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 2463248 |
| 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 | false |
| 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 |
| IRS990ScheduleG/FundraisingEventInformationGrp/DirectExpenseSummaryEventsAmt | 0 | 57322 |
| IRS990ScheduleG/FundraisingEventInformationGrp/Event1Nm | 0 | AUCTION |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsEvent1Amt | 0 | 94742 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsTotalAmt | 0 | 94742 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueEvent1Amt | 0 | 94742 |
| IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueTotalEventsAmt | 0 | 94742 |
| IRS990ScheduleG/FundraisingEventInformationGrp/NetIncomeSummaryAmt | 0 | 37420 |
| IRS990ScheduleG/FundraisingEventInformationGrp/OthDirectExpnssTotalEventsAmt | 0 | 57322 |
| IRS990ScheduleG/FundraisingEventInformationGrp/OtherDirectExpensesEvent1Amt | 0 | 57322 |
| IRS990ScheduleI/GrantRecordsMaintainedInd | 0 | true |
| IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/CashGrantAmt | 0 | 14176 |
| IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/GrantTypeTxt | 0 | FINANCIAL AID TO STUDENTS |
| IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/RecipientCnt | 0 | 3 |
| IRS990ScheduleJ/AnyNonFixedPaymentsInd | 0 | false |
| IRS990ScheduleJ/CompBasedOnRevenueOfFlngOrgInd | 0 | false |
| IRS990ScheduleJ/CompBsdNetEarnsFlngOrgInd | 0 | false |
| IRS990ScheduleJ/CompBsdNetEarnsRltdOrgsInd | 0 | false |
| IRS990ScheduleJ/CompBsdOnRevRelatedOrgsInd | 0 | false |
| IRS990ScheduleJ/InitialContractExceptionInd | 0 | false |
| IRS990/ScheduleJRequiredInd | 0 | true |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/BaseCompensationFilingOrgAmt | 0 | 150763 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 0 | 13627 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/PersonNm | 0 | CATHY SWAN |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TitleTxt | 0 | HEAD OF SCHOOL |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/TotalCompensationFilingOrgAmt | 0 | 164390 |
| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | PROCESSES TO REVIEW FORM 990: A COMMITTEE CONSISTING OF THE TREASURER, THE HEAD OF THE SCHOOL AND THE BUSINESS ADMINISTRATOR REVIEWS AND APPROVES THE FORM 990 PRIOR TO ITS FILING. A COPY OF THE FORM 990 IS ALSO PROVIDED TO ALL THE MEMBERS OF THE GOVERNING BOARD PRIOR TO FILING. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | CONFLICTS OF INTEREST: MSB MONITORS AND ENFORCES COMPLIANCE WITH THE CONFLICT OF INTEREST POLICY BY ASKING THE BOARD MEMBERS ANNUALLY TO DISCLOSE ANY CONFLICT OF INTERESTS BY WRITTEN QUESTIONNAIRE. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | COMPENSATION DETERMINATION PROCESS: MEMBERS OF THE BOARD OF DIRECTORS ARE NOT COMPENSATED BY MSB. THE COMPENSATION FOR THE HEAD OF SCHOOL IS RESEARCHED BY THE BOARD OF DIRECTORS BY COMPARING THE SAME POSITION AMONG SCHOOLS LOCALLY AND NATIONALLY, TAKING INTO CONSIDERATION THE FACTOR OF COST OF LIVING AND THE PERFORMANCE OF THE ADMINISTRATOR. THE PROPOSED COMPENSATION IS DISCUSSED AND APPROVED BY THE BOARD AND IS DOCUMENTED IN THE BOARD MINUTES. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | REASONABLE REQUESTS FOR ORGANIZATIONAL FORMS 990 ARE AVAILABLE TO THE PUBLIC UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | REASONABLE REQUESTS FOR GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Form 990 governing body review Part VI line 11 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Conflict of interest policy compliance Part VI line 12c |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | CEO executive director top management comp Part VI line 15a |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | Form 990 availability to public Part VI line 18 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | Governing documents etc available to public Part VI line 19 |
| IRS990/SchoolOperatingInd | 0 | true |
| IRS990/SignificantChangeInd | 0 | false |
| IRS990/SignificantNewProgramSrvcInd | 0 | false |
| IRS990/StatesWhereCopyOfReturnIsFldCd | 0 | OR |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | false |
| IRS990/SubjectToProxyTaxInd | 0 | false |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | false |
| IRS990/TaxablePartyNotificationInd | 0 | false |
| IRS990/TaxExemptBondsInd | 0 | false |
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