Liabilities / Assets
86th percentile
Higher debt load relative to assets than 86% of similar nonprofits.
EIN 51-6018405 • 501(c)3 • Rome, IT
Profile
The American Overseas School of Rome is an independent institution catering to the needs of the english-speaking community offering curricula that prepare students for admission to American
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
86th percentile
Higher debt load relative to assets than 86% of similar nonprofits.
Liabilities / Revenue
81st percentile
Higher debt load relative to revenue than 81% of similar nonprofits.
Net Margin
38th percentile
Higher net margin than 38% of similar nonprofits.
Top Officer Pay
32nd percentile
Higher top officer pay than 32% of similar nonprofits.
Top officer pay equals 1.2% of source-year revenue.
Asset Growth
76th percentile
Faster asset growth than 76% of similar nonprofits.
Revenue Growth
52nd percentile
Faster revenue growth than 52% of similar nonprofits.
Assets
Up$27,251,666
Up $3,438,105 (+14%) from 2024
Liabilities
Up$21,035,397
Up $2,100,464 (+11%) from 2024
Net Assets
Up$6,216,269
Up $1,337,641 (+27%) from 2024
Revenue
Up$16,851,226
Up $1,329,436 (+8.6%) from 2024
Expenses
Up$16,755,452
Up $2,434,200 (+17%) from 2024
Net Income
Down$95,774
Down $1,104,764 (-92%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
The American Overseas School of Rome is an independent institution catering to the needs of the english-speaking community offering curricula that prepare students for admission to American
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Accounts Receivable | $9,813,215 | $12,092,626 | ▲ $2,279,411 |
| Cash and Non-Interest-Bearing Accounts | $6,750,287 | $4,541,431 | ▼ $2,208,856 |
| Land, Buildings, and Equipment, Net | $3,386,451 | $3,822,187 | ▲ $435,736 |
| Prepaid Expenses and Deferred Charges | $566,652 | $1,011,055 | ▲ $444,403 |
| Total Assets | $23,813,561 | $27,251,666 | ▲ $3,438,105 |
| Other Assets Total | $3,296,956 | $5,784,367 | ▲ $2,487,411 |
| Liabilities | |||
| Deferred Revenue | $14,520,712 | $17,052,001 | ▲ $2,531,289 |
| Accounts Payable and Accrued Expenses | $3,890,155 | $3,390,679 | ▼ $499,476 |
| Other Liabilities | $524,066 | $592,717 | ▲ $68,651 |
| Total Liabilities | $18,934,933 | $21,035,397 | ▲ $2,100,464 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $4,878,628 | $6,216,269 | ▲ $1,337,641 |
| Total Net Assets Fund Balance | $4,878,628 | $6,216,269 | ▲ $1,337,641 |
| Total Liabilities and Net Assets / Fund Balance | $23,813,561 | $27,251,666 | ▲ $3,438,105 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Equipment | $926,808 | $5,185,372 | $6,112,180 |
| Buildings | $2,895,379 | $3,156,759 | $6,052,138 |
| Land | $0 | - | $0 |
| Other Assets Org | $0 | - | - |
| Name | Title | Full / Part Time | Base | Total |
|---|---|---|---|---|
| Kristen DiMatteo | Head of School | FT | $198,258 | $198,258 |
| Kristen DiMatteo | - | - | $198,258 | $198,258 |
| Jerome Duggan | Elemantary School Principal | FT | $79,862 | $79,862 |
| Jerome Duggan | - | - | $79,862 | $79,862 |
| Joanne Mallary | Secondary School Principal | FT | $79,852 | $79,852 |
| Joanne Mallary | - | - | $79,852 | $79,852 |
| Name | Title |
|---|---|
| Belinda Knudsson | Chair |
| Annamaria Petrilli | Vice Chair |
| Carolina Gualtieri | Trustee |
| Chiara Brunori | Trustee |
| Dean Bordigioni | Trustee |
| Giovanni Boccardi | Trustee |
| Keely Kilburg | Trustee |
| Maren Gazulis | Trustee |
| Massimo Di Gregorio | Trustee |
| Tam Hinsche | Trustee |
| Jeffrey Steelman | Secretary |
| Maryna Mananikova | Treasurer |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $9,996,939 |
| Other Expenses | $6,758,513 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $7,582,524 | $0 | $0 | $7,582,524 |
| All Other Expenses | $4,814,332 | $0 | $0 | $4,814,332 |
| Payroll Taxes | $1,864,192 | $0 | $0 | $1,864,192 |
| Depreciation Depletion | $0 | $1,038,977 | $0 | $1,038,977 |
| Pension Plan Contributions | $550,223 | $0 | $0 | $550,223 |
| Fees for Services Other | $335,281 | $0 | $0 | $335,281 |
| Advertising | $0 | $68,184 | $0 | $68,184 |
| Office Expenses | $13,188 | $0 | $0 | $13,188 |
| Interest | $0 | $8,838 | $0 | $8,838 |
| Total Functional Expenses | $15,550,281 | $1,205,171 | $0 | $16,755,452 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Liability | Amount |
|---|---|
| Reserve for Termination | $247,502 |
| Social Security Payable | $177,448 |
| Payroll Withholding Taxes | $141,105 |
| Deferred Revenue | $26,662 |
| Reserve for Deferred Taxes | $0 |
“There is only one class of members which are the parents. They vote for the officers and are given one vote per parent.”
“Parents are members and vote for the officers.”
“There are no committees authorized to act on behalf of the governing body.”
“Provided by the Director of Finance to the Board of Trustees for review”
“Conflict of interest policy compliance The organization regularly enforces compliance with the written conflict of interest policy by having contracts reviewed regularly to ensure board members and key employees have no ownership interest and employment applications are ranked in a blind ranking without identifying information attached.”
“At hiring or contract renewal pay comparability information is solicited from like schools and from organizations such as the academy of international school heads in the case of new hire candidates that are provided through an independent employment agency. The board of trustees nominates an internal committee that on the basis of a compensation survey establishes the Head of Schools compensation. The contract is then prepared by an AOSR legal advocate and signed by the Board Chair.”
“At hiring or contract renewal pay comparability information is solicited from like schools and from organizations such as the academy of international school heads in the case of new hire candidates that are provided through an independent employment agency. The board of trustees nominates an internal committee that on the basis of a compensation survey establishes the Head of Schools compensation. The contract is then prepared by an AOSR legal advocate and signed by the Board Chair.”
“On the basis of the bylaws, the financial statements are approved at the corporation assembly. The financial statements are audited by an independent auditor. The report is available upon request. Governing documents, etc, are made available to the public”
“June 30, 2025 balances have been adjusted to reflect a foreign currency conversion rate of 1.17159 euros to dollars, rather than the conversion rate effective June 30, 2024 of 1.07115.”
“N/A”
“Transportation Services 1094804. 1094804. 0. 0.”
“Clean/sanitary 72733. 72733. 0. 0.”
“Consultants 74487. 74487. 0. 0.”
“Instructional 311321. 311321. 0. 0.”
“Leases and rentals 504596. 504596. 0. 0.”
“Library & Academic licenses 168405. 168405. 0. 0.”
“Maintenance 411975. 411975. 0. 0.”
“Mensa Cafeteria 185021. 185021. 0. 0.”
“New Employee Expense 195218. 195218. 0. 0.”
“Other Expenses 617306. 617306. 0. 0.”
“Other Personnel Costs 394960. 394960. 0. 0.”
“Professional Development 148483. 148483. 0. 0.”
“School activities 272209. 272209. 0. 0.”
“Utilities 362814. 362814. 0. 0.”
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 | true |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 3890155 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 3390679 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 9813215 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 12092626 |
| IRS990/AcctCompileOrReviewBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | The American Overseas School of Rome is an independent institution catering to the needs of the english-speaking community offering curricula that prepare students for admission to American |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 0 |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 68184 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 68184 |
| IRS990/AllOtherContributionsAmt | 0 | 62137 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 4814332 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 4814332 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BooksInCareOfDetail/ForeignAddress/AddressLine1Txt | 0 | Via Cassia 811 |
| IRS990/BooksInCareOfDetail/ForeignAddress/CityNm | 0 | Rome |
| IRS990/BooksInCareOfDetail/ForeignAddress/CountryCd | 0 | IT |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | Mariana Adler |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 3906334394 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 6750287 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 4541431 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | true |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 152969 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 0 |
| IRS990/CYOtherExpensesAmt | 0 | 6758513 |
| IRS990/CYOtherRevenueAmt | 0 | 0 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 16698257 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 95774 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 9996939 |
| IRS990/CYTotalExpensesAmt | 0 | 16755452 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 16851226 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 14520712 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 17052001 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/FundraisingAmt | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 1038977 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 1038977 |
| IRS990/Desc | 0 | American Overseas School of Rome teaching methods and curricula are designed to prepare students to meet the entrance requirements of US colleges and universities special education and ESL programs are offered. Special attention is given to the multinational character of the school and to the cultural opportunities offered by the host country. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | true |
| IRS990/EmployeeCnt | 0 | 85 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 15550281 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 335281 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 335281 |
| IRS990/ForeignActivitiesInd | 0 | true |
| IRS990/ForeignAddress/AddressLine1Txt | 0 | Via Nemea 21 |
| IRS990/ForeignAddress/CityNm | 0 | Rome |
| IRS990/ForeignAddress/CountryCd | 0 | IT |
| IRS990/ForeignCountryCd | 0 | IT |
| IRS990/ForeignFinancialAccountInd | 0 | true |
| IRS990/ForeignOfficeInd | 0 | true |
| IRS990/Form720FiledInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 60.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 40.00 |
| 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 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | 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/IndividualTrusteeOrDirectorInd | 12 | 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/OtherCompensationAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | Kristen DiMatteo |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Joanne Mallary |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Jerome Duggan |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Tam Hinsche |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Belinda Knudsson |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Annamaria Petrilli |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Jeffrey Steelman |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Giovanni Boccardi |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Chiara Brunori |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Maren Gazulis |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | Carolina Gualtieri |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | Maryna Mananikova |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | Keely Kilburg |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | Dean Bordigioni |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | Massimo Di Gregorio |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 198258 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 79852 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 79862 |
| 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/ReportableCompFromOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 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/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | Head of School |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Secondary School Principal |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Elemantary School Principal |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Chair |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Vice Chair |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | Trustee |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/FormationYr | 0 | 1962 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 12 |
| IRS990/GovernmentGrantsAmt | 0 | 90832 |
| IRS990/GrantAmt | 0 | 90832 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 16851226 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 12 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartVInd | 0 | X |
| IRS990/InterestGrp/FundraisingAmt | 0 | 0 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 8838 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 0 |
| IRS990/InterestGrp/TotalAmt | 0 | 8838 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 8342131 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 3386451 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 3822187 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 12164318 |
| IRS990/LegalDomicileCountryCd | 0 | IT |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | true |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | true |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | false |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | The American Overseas School of Rome is an independent institution catering to the needs of the english-speaking community offering curricula that prepare students for admission to American |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 4878628 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 6216269 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 4878628 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 6216269 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 13188 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 13188 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 3296956 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 5784367 |
| IRS990/OtherExpensesGrp/Desc | 0 | Taxes |
| IRS990/OtherExpensesGrp/Desc | 1 | Income Taxes IRES |
| IRS990/OtherExpensesGrp/Desc | 2 | Income Taxes IRAP |
| IRS990/OtherExpensesGrp/Desc | 3 | Income Taxes Deferred |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 0 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 2 | 0 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 3 | 0 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 0 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 89172 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 3 | 0 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 61626 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 328915 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 0 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 0 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 61626 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 328915 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 89172 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 0 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 524066 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 592717 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 0 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 7582524 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 7582524 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 0 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 1864192 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 1864192 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 0 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 0 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 550223 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 550223 |
| IRS990/PoliciesReferenceChaptersInd | 0 | true |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 566652 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 1011055 |
| IRS990/PrincipalOfficerNm | 0 | Belinda Kundson |
| IRS990/PriorPeriodAdjustmentsAmt | 0 | 1241867 |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611600 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 611710 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 2 | 611600 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 3 | 611600 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | Tuition Fees |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | School Bus Fees |
| IRS990/ProgramServiceRevenueGrp/Desc | 2 | Registration |
| IRS990/ProgramServiceRevenueGrp/Desc | 3 | Financial Aid |
| IRS990/ProgramServiceRevenueGrp/ExclusionAmt | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/ExclusionAmt | 1 | 0 |
| IRS990/ProgramServiceRevenueGrp/ExclusionAmt | 2 | 0 |
| IRS990/ProgramServiceRevenueGrp/ExclusionAmt | 3 | 0 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 15230587 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 1061882 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 2 | 570564 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 3 | -164776 |
| IRS990/ProgramServiceRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/UnrelatedBusinessRevenueAmt | 1 | 0 |
| IRS990/ProgramServiceRevenueGrp/UnrelatedBusinessRevenueAmt | 2 | 0 |
| IRS990/ProgramServiceRevenueGrp/UnrelatedBusinessRevenueAmt | 3 | 0 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 200024 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYOtherExpensesAmt | 0 | 5676513 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 15321766 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 1200538 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 8644739 |
| IRS990/PYTotalExpensesAmt | 0 | 14321252 |
| IRS990/PYTotalRevenueAmt | 0 | 15521790 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 95774 |
| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | true |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990/RevenueAmt | 0 | 16851226 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0 |
| IRS990ScheduleA/OtherSupportSumAmt | 0 | 0 |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0 |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 0 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 0 |
| IRS990ScheduleA/SchoolInd | 0 | X |
| IRS990/ScheduleBRequiredInd | 0 | false |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 2895379 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 3156759 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 6052138 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 926808 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 5185372 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 6112180 |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 0 |
| IRS990ScheduleD/LandGrp/InvestmentCostOrOtherBasisAmt | 0 | 0 |
| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 0 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 0 | 58266 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 1 | 5726101 |
| IRS990ScheduleD/OtherAssetsOrgGrp/BookValueAmt | 2 | 0 |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 0 | Deposits & Deferred Costs |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 1 | Investment in IVT |
| IRS990ScheduleD/OtherAssetsOrgGrp/Desc | 2 | Prepaid Rent |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 141105 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 1 | 177448 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 2 | 0 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 3 | 247502 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 4 | 26662 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | Payroll Withholding Taxes |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 1 | Social Security Payable |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 2 | Reserve for Deferred Taxes |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 3 | Reserve for Termination |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 4 | Deferred Revenue |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 3822187 |
| IRS990ScheduleD/TotalBookValueOtherAssetsAmt | 0 | 5784367 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 592717 |
| 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 | false |
| IRS990ScheduleE/MaintainScholarshipsRecsInd | 0 | true |
| IRS990ScheduleE/NondiscriminatoryPolicyStmtInd | 0 | true |
| IRS990ScheduleE/PlcyPblczdViaBroadcastMediaInd | 0 | true |
| IRS990ScheduleE/PolicyStmtInBrochuresEtcInd | 0 | true |
| IRS990ScheduleE/SupplementalInformationDetail/ExplanationTxt | 0 | This is done during registration period. This is done during registration period. |
| IRS990ScheduleE/SupplementalInformationDetail/ExplanationTxt | 1 | The school receives grants from the US Department of State to support professional salaries, educational materials, in-service training activities, ect. as well as grants specifically designed to upgrading the security of the school. The organizations right has never been revoked or suspended. |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Line 3 |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | Line 6b |
| IRS990ScheduleF/BoycottCountriesInd | 0 | false |
| IRS990ScheduleF/ForeignCorpOwnershipInd | 0 | false |
| IRS990ScheduleF/ForeignPartnershipInd | 0 | false |
| IRS990ScheduleF/GrantRecordsMaintainedInd | 0 | true |
| IRS990ScheduleF/InterestInForeignTrustInd | 0 | false |
| IRS990ScheduleF/PassiveForeignInvestmestCoInd | 0 | false |
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