Liabilities / Assets
89th percentile
Higher debt load relative to assets than 89% of similar nonprofits.
EIN 04-2321011 • 501(c)3 • Cambridge, MA
Profile
At cambridge montessori school, we partner with our diverse community, using authentic montessori principles to reveal each child's innate love of learning and prepare our children to thrive in a complex world.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
89th percentile
Higher debt load relative to assets than 89% of similar nonprofits.
Liabilities / Revenue
84th percentile
Higher debt load relative to revenue than 84% of similar nonprofits.
Net Margin
28th percentile
Higher net margin than 28% of similar nonprofits.
Top Officer Pay
85th percentile
Higher top officer pay than 85% of similar nonprofits.
Top officer pay equals 4.9% of source-year revenue.
Asset Growth
31st percentile
Faster asset growth than 31% of similar nonprofits.
Revenue Growth
85th percentile
Faster revenue growth than 85% of similar nonprofits.
Assets
Down$6,773,401
Down $98,370 (-1.4%) from 2023
Liabilities
Up$5,387,589
Up $109,650 (+2.1%) from 2023
Net Assets
Down$1,385,812
Down $208,020 (-13%) from 2023
Revenue
Up$5,589,142
Up $1,919,623 (+52%) from 2023
Expenses
Up$5,797,162
Up $630,916 (+12%) from 2023
Net Income
Up-$208,020
Up $1,288,707 (+86%) from 2023
Most recent year
2024 • Form 990Detailed filing. Detailed filing data is available for this year.
At cambridge montessori school, we partner with our diverse community, using authentic montessori principles to reveal each child's innate love of learning and prepare our children to thrive in a complex world.
See Schedule O
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Accounts Receivable | $2,748,715 | $2,676,837 | ▼ $71,878 |
| Cash and Non-Interest-Bearing Accounts | $2,030,044 | $2,233,649 | ▲ $203,605 |
| Land, Buildings, and Equipment, Net | $1,695,918 | $1,660,188 | ▼ $35,730 |
| Investments in Publicly Traded Securities | $32,894 | $37,094 | ▲ $4,200 |
| Prepaid Expenses and Deferred Charges | $25,381 | $11,081 | ▼ $14,300 |
| Total Assets | $6,871,771 | $6,773,401 | ▼ $98,370 |
| Other Assets Total | $338,819 | $154,552 | ▼ $184,267 |
| Liabilities | |||
| Deferred Revenue | $3,591,509 | $3,653,384 | ▲ $61,875 |
| Mortgage Notes Payable Secured by Investment Property | $1,463,393 | $1,248,556 | ▼ $214,837 |
| Accounts Payable and Accrued Expenses | $223,037 | $485,649 | ▲ $262,612 |
| Total Liabilities | $5,277,939 | $5,387,589 | ▲ $109,650 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $1,593,832 | $1,385,812 | ▼ $208,020 |
| Total Net Assets Fund Balance | $1,593,832 | $1,385,812 | ▼ $208,020 |
| Total Liabilities and Net Assets / Fund Balance | $6,871,771 | $6,773,401 | ▼ $98,370 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Buildings | $1,237,621 | $2,670,524 | $3,908,145 |
| Equipment | $25,966 | $805,870 | $831,836 |
| Land | $350,000 | - | $350,000 |
| Leasehold Improvements | $46,601 | $118,381 | $164,982 |
| Other Land Buildings | $0 | $94,883 | $94,883 |
| Name | Title | Full / Part Time | Base | Total |
|---|---|---|---|---|
| Sue Angelides | Head of School | FT | $275,000 | $275,000 |
| Nikki Jacobs | CFO | FT | $151,544 | $151,544 |
| Allison Lynch | Assistant Head of School | FT | $141,377 | $141,377 |
| Maggie Moyers | Staff | FT | $116,597 | $116,597 |
| Name | Title |
|---|---|
| Michael Flannery | Chair |
| Amelia Newbury | Trustee |
| Courtney Slade | Trustee |
| John Sweeney | Trustee |
| Mike Cragg | Trustee |
| Mike Moran | Trustee |
| Sara Ontiveros | Trustee |
| Todd Goulet | Trustee |
| Robert Cooke | Secretary |
| Anne Lawson | Treasurer |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $3,670,281 |
| Other Expenses | $1,485,501 |
| Grants and Similar Amounts Paid | $641,380 |
| Total Fundraising Expense | $49,144 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $2,813,815 | $265,579 | $27,528 | $3,106,922 |
| Grants to Domestic Individuals | $641,380 | - | - | $641,380 |
| Occupancy | $474,735 | $32,273 | $2,547 | $509,555 |
| Other Employee Benefits | $257,070 | $38,319 | $3,324 | $298,713 |
| Payroll Taxes | $194,033 | $33,803 | $3,167 | $231,003 |
| Fees for Services Other | $127,649 | $96,022 | - | $223,671 |
| Fees for Services Accounting | - | $126,167 | - | $126,167 |
| Depreciation Depletion | $77,849 | $5,292 | $417 | $83,558 |
| Office Expenses | $44,752 | $7,279 | - | $52,031 |
| Insurance | $42,114 | $2,863 | $226 | $45,203 |
| Interest | - | $43,000 | - | $43,000 |
| Pension Plan Contributions | $30,951 | $2,423 | $269 | $33,643 |
| Other Expenses | $21,225 | $18,602 | $114 | $18,602 |
| All Other Expenses | $13,959 | $2,700 | $1,595 | $18,254 |
| Fees for Services Legal | - | $8,298 | - | $8,298 |
| Total Functional Expenses | $4,986,996 | $761,022 | $49,144 | $5,797,162 |
| Line Item | Amount |
|---|---|
| Total Expenses per Form 990 | $5,797,162 |
| Expenses per Audited Statements | $5,155,782 |
| Total Expenses per Audited Statements | $5,155,782 |
| Expenses Not Reported on Financial Statements | $641,380 |
| Other Expense Adjustments | $641,380 |
| Expenses Not Reported on Form 990 | $0 |
| Line Item | Amount |
|---|---|
| Fundraising Gross Income | $85,874 |
| Fundraising Direct Expenses | $21,302 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Auction | $85,874 | $85,874 | $6,597 | $79,277 |
| Total Events | $85,874 | $85,874 | $20,762 | $65,112 |
| Interested Party | Relationship | Description | Shared Revenue | Amount |
|---|---|---|---|---|
| Substantial contributors | Board members | Contribution.LIST 70 _ 5vguerra - 05/09/24 16:00 PM Worksheet Schedule L - Transactions with Interested PersonsCooke _ 5000Sweeney _ 15581Goulet _ 7888Ontiveros _ 25000 | No | $17,888 |
“The Completed Form 990 will be presented to the Board of Directors prior to its filing”
“Each year the Organization's conflict of interest policy is provided to all officers, directors and key employees. These people are asked to review the policy and sign a statement indicating that they understand the policy,have reported all potential conflicts during the past year in accordance with the policy and will report all potential conflicts in the coming year.All potential conflicts are evaluated by the board to determine if a conflict actually exists. In those instances where the potential transaction is a conflict, the board examines the transaction and a vote is taken (with those involved recusing themselves) as to whether the Organization will enter into the transaction.”
“Annually, a compensation committee composed of board members conducts a performance review and evaluation of the head of school. The review also establishes the individual's compensation of comparable positions at similar organizations. The board's deliberation and decision is noted in the minutes of the meeting. The compensation of other officers and key employees is established by the head of school and is available for review by the board.”
“The Organization's articles or incorporation are available at the secretary of state's office. The annual financial statements are included in the annual filing with the state attorney general and are available for public inspection at that office. The Organization does not make its by-laws or its conflict of interest policy available to the public as it does not believe that a public purpose would be served by doing so. All legally mandated policies are included in the employee and student handbooks.”
“Income taxes are accounted for in accordance with the Accounting Standards Codification Topic 740 "Income Taxes" (ASC 740). The School accounts for uncertain income tax positions under ASC 740. ASC 740 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return and also provides guidance on de-recognition, classification, interest and penalties, disclosure and transition. As of June 30, 2023, the School had no material unrecognized tax benefits and no adjustments to liabilities or operations were required under ASC 740. The School's practice was and continues to be to recognize interest and penalty expenses related to uncertain tax positions in income tax expense, which were zero for the years ended June 30, 2023.”
“Financial aid”
“Financial aid Loss on sale of PP&E”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
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| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 485649 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 2748715 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 2676837 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | See Schedule O |
| IRS990/AllOtherContributionsAmt | 0 | 78298 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 1595 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 2700 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 13959 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 18254 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | Nikki Jacobs |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6174923410 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 129 Sherman Street |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | Cambridge |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 02140 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 1 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 2030044 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 2233649 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CreditCounselingInd | 0 | 0 |
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| IRS990/CYContributionsGrantsAmt | 0 | 113298 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 641380 |
| IRS990/CYInvestmentIncomeAmt | 0 | 4479 |
| IRS990/CYOtherExpensesAmt | 0 | 1485501 |
| IRS990/CYOtherRevenueAmt | 0 | 64572 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 5406793 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -208020 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 3670281 |
| IRS990/CYTotalExpensesAmt | 0 | 5797162 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 49144 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 5589142 |
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| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 3591509 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 3653384 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 417 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 5292 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 77849 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 83558 |
| IRS990/Desc | 0 | TODDLER THROUGH MIDDLE SCHOOL EDUCATION PROGRAMS TO CHILDREN RANGING FROM 21 MONTHS TO 14 YEARS OLD, ALONG WITH DAY CARE SERVICES. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
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| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 73 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 4986996 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 126167 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 126167 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 8298 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 8298 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 96022 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 127649 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 223671 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 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/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 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | Anne Lawson |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Robert Cooke |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Michael Flannery |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | John Sweeney |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Amelia Newbury |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Sara Ontiveros |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Mike Cragg |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Courtney Slade |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Mike Moran |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | Nikki Jacobs |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | Allison Lynch |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | Sue Angelides |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | Maggie Moyers |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 275000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 116597 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Chair |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | CFO |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | Assistant Head of School |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | Head of School |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | Staff |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1964 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 1 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 21302 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 85874 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 13 |
| IRS990/GovernmentGrantsAmt | 0 | 35000 |
| IRS990/GrantAmt | 0 | 641380 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 641380 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 641380 |
| IRS990/GrantsToIndividualsInd | 0 | 1 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
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| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 13 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 4 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 226 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 2863 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 42114 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 45203 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 43000 |
| IRS990/InterestGrp/TotalAmt | 0 | 43000 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 4479 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 4479 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 32894 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 37094 |
| IRS990/IRPDocumentCnt | 0 | 5 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 3689658 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 1695918 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 1660188 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 5349846 |
| IRS990/LegalDomicileStateCd | 0 | MA |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | AT CAMBRIDGE MONTESSORI SCHOOL, WE PARTNER WITH OUR DIVERSE COMMUNITY, USING AUTHENTIC MONTESSORI PRINCIPLES TO REVEAL EACH CHILD'S INNATE LOVE OF LEARNING AND PREPARE OUR CHILDREN TO THRIVE IN A COMPLEX WORLD. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/BOYAmt | 0 | 1463393 |
| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 1248556 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 1593832 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 1385812 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | 64572 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 64572 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 1593832 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 1385812 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 2547 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 32273 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 474735 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 509555 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 7279 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 44752 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 52031 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 338819 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 154552 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 3324 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 38319 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 257070 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 298713 |
| IRS990/OtherExpensesGrp/Desc | 0 | Educational expenses |
| IRS990/OtherExpensesGrp/Desc | 1 | Bank and other fees |
| IRS990/OtherExpensesGrp/Desc | 2 | Equipment rental |
| IRS990/OtherExpensesGrp/Desc | 3 | Recruiting |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 9957 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 114 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 73376 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 3583 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 1443 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 18602 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 225444 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 22020 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 21225 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 308777 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 25603 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 22782 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 18602 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 27528 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 265579 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 2813815 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 3106922 |
| IRS990/OwnWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 3167 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 33803 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 194033 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 231003 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 269 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 2423 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 30951 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 33643 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 25381 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 11081 |
| IRS990/PrincipalOfficerNm | 0 | Nikki Jacobs |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611710 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 611710 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 611710 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 3 | 611710 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | School Tuition |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | Extended day program |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | Summer school tuition |
| IRS990/ProgramServiceRevenueGrp/Desc | 3 | Other tuition & fees |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 4736958 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 331063 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 2 | 327343 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 3 | 11429 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 4736958 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 331063 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 327343 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 3 | 11429 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 153581 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 362518 |
| IRS990/PYInvestmentIncomeAmt | 0 | -1326294 |
| IRS990/PYOtherExpensesAmt | 0 | 1412963 |
| IRS990/PYOtherRevenueAmt | 0 | 13118 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 4829114 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -1496727 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 3390765 |
| IRS990/PYTotalExpensesAmt | 0 | 5166246 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 3669519 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -208020 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 0 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RevenueAmt | 0 | 5406793 |
| 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 | 1 |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 1237621 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 2670524 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 3908145 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 25966 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 805870 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 831836 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 641380 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 5155782 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 350000 |
| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 350000 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/BookValueAmt | 0 | 46601 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/DepreciationAmt | 0 | 118381 |
| IRS990ScheduleD/LeaseholdImprovementsGrp/OtherCostOrOtherBasisAmt | 0 | 164982 |
| IRS990ScheduleD/OtherExpensesNotIncludedAmt | 0 | 641380 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 0 |
| IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt | 0 | 94883 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 94883 |
| IRS990ScheduleD/OtherRevenuesNotIncludedAmt | 0 | 641380 |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 0 |
| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 641380 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 4947762 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | Income taxes are accounted for in accordance with the Accounting Standards Codification Topic 740 "Income Taxes" (ASC 740). The School accounts for uncertain income tax positions under ASC 740. ASC 740 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return and also provides guidance on de-recognition, classification, interest and penalties, disclosure and transition. As of June 30, 2023, the School had no material unrecognized tax benefits and no adjustments to liabilities or operations were required under ASC 740. The School's practice was and continues to be to recognize interest and penalty expenses related to uncertain tax positions in income tax expense, which were zero for the years ended June 30, 2023. |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 1 | Financial aid |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 2 | Financial aid Loss on sale of PP&E |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part X, Line 2: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Part XI, Line 4b - Other Adjustments: |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | Part XII, Line 4b - Other Adjustments: |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 1660188 |
| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 5797162 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 5589142 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 4947762 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 5155782 |
| IRS990ScheduleE/ComplianceWithRevProc7550Ind | 0 | 1 |
| IRS990ScheduleE/DiscriminateRaceAdmissPlcyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceAthltProgInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceEducPlcyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceEmplmFcultyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceOtherActyInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceSchsInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceStdntsRghtsInd | 0 | 0 |
| IRS990ScheduleE/DiscriminateRaceUseOfFcltsInd | 0 | 0 |
| IRS990ScheduleE/GovernmentFinancialAidRcvdInd | 0 | 0 |
| IRS990ScheduleE/GovernmentFinancialAidRvkdInd | 0 | 0 |
| IRS990ScheduleE/MaintainCpyOfAllSolInd | 0 | 1 |
| IRS990ScheduleE/MaintainCpyOfBrochuresEtcInd | 0 | 1 |
| IRS990ScheduleE/MaintainRacialCompRecsInd | 0 | 1 |
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