Liabilities / Assets
83rd percentile
Higher debt load relative to assets than 83% of similar nonprofits.
EIN 23-1743706 • 501(c)3 • Harrisburg, PA
Profile
The londonderry school provides private pre-school and elementary education for approximately 200 students and seeks to help each child reach his/her full potential in a loving, safe, supportive, and fun atmosphere.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
83rd percentile
Higher debt load relative to assets than 83% of similar nonprofits.
Liabilities / Revenue
86th percentile
Higher debt load relative to revenue than 86% of similar nonprofits.
Net Margin
16th percentile
Higher net margin than 16% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
13th percentile
Faster asset growth than 13% of similar nonprofits.
Revenue Growth
17th percentile
Faster revenue growth than 17% of similar nonprofits.
Assets
Down$1,972,106
Down $289,086 (-13%) from 2023
Liabilities
Down$1,000,968
Down $71,043 (-6.6%) from 2023
Net Assets
Down$971,138
Down $218,043 (-18%) from 2023
Revenue
Down$1,281,635
Down $244,576 (-16%) from 2023
Expenses
Down$1,499,678
Down $145,927 (-8.9%) from 2023
Net Income
Down-$218,043
Down $98,649 (-83%) from 2023
Most recent year
2024 • Form 990Detailed filing. Detailed filing data is available for this year.
The londonderry school provides private pre-school and elementary education for approximately 200 students and seeks to help each child reach his/her full potential in a loving, safe, supportive, and fun atmosphere.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $1,913,852 | $1,815,194 | ▼ $98,658 |
| Investments in Publicly Traded Securities | - | $80,728 | - |
| Cash and Non-Interest-Bearing Accounts | $333,476 | $41,111 | ▼ $292,365 |
| Savings and Temporary Cash Investments | - | $24,222 | - |
| Intangible Assets | $11,522 | $7,332 | ▼ $4,190 |
| Accounts Receivable | $1,439 | $2,014 | ▲ $575 |
| Prepaid Expenses and Deferred Charges | $902 | $1,502 | ▲ $600 |
| Other Notes and Loans Receivable, Net | - | $0 | - |
| Pledges and Grants Receivable | - | $0 | - |
| Receivable From Disqualified Prsn | - | $0 | - |
| Receivables From Officers Etc | - | $0 | - |
| Investments Other Securities | - | $0 | - |
| Investments Program Related | - | $0 | - |
| Inventories for Sale or Use | - | $0 | - |
| Total Assets | $2,261,192 | $1,972,106 | ▼ $289,086 |
| Other Assets Total | $1 | $3 | ▲ $2 |
| Liabilities | |||
| Mortgage Notes Payable Secured by Investment Property | $1,034,365 | $942,535 | ▼ $91,830 |
| Accounts Payable and Accrued Expenses | $28,645 | $31,133 | ▲ $2,488 |
| Deferred Revenue | $9,001 | $27,300 | ▲ $18,299 |
| Total Liabilities | $1,072,011 | $1,000,968 | ▼ $71,043 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $1,176,584 | $955,541 | ▼ $221,043 |
| Net Assets With Donor Restrictions | $12,597 | $15,597 | ▲ $3,000 |
| Total Net Assets Fund Balance | $1,189,181 | $971,138 | ▼ $218,043 |
| Total Liabilities and Net Assets / Fund Balance | $2,261,192 | $1,972,106 | ▼ $289,086 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Buildings | $1,694,665 | $1,798,286 | $3,492,951 |
| Land | $102,236 | - | $102,236 |
| Equipment | $12,639 | $71,561 | $84,200 |
| Other Land Buildings | $5,654 | $50,579 | $56,233 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2023 | $92,002 | $27,942 | ▲ $9,470 | - | $129,059 |
| 2022 | $53,707 | $34,667 | ▲ $3,898 | - | $92,002 |
| 2021 | $28,832 | $25,616 | ▼ $471 | - | $53,707 |
| 2020 | $26,594 | - | ▲ $2,508 | - | $28,832 |
| 2019 | $25,579 | - | ▲ $1,285 | - | $26,594 |
| Name | Title | Full / Part Time | Base | Total |
|---|---|---|---|---|
| Christina Luo | Director | FT | $46,125 | $46,125 |
| Name | Title |
|---|---|
| Kristin Jenko | President |
| Brian Hope | Vice President |
| Adam Turk | Trustee |
| Angela Faulkner | Trustee |
| Colette Clark | Trustee |
| Laura Eichhammer | Trustee |
| Maiya Harris | Trustee |
| Ronald Melusky | Trustee |
| Theresa Wilson | Secretary |
| Amanda Fullmer | Treasurer |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $1,075,513 |
| Other Expenses | $424,165 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $848,134 | - | - | $848,134 |
| Other Employee Benefits | $101,445 | - | - | $101,445 |
| Depreciation Depletion | $98,657 | - | - | $98,657 |
| Payroll Taxes | $68,617 | - | - | $68,617 |
| Current Officers, Directors, Trustees, and Key Employees | $46,125 | - | - | $46,125 |
| Interest | - | $38,831 | - | $38,831 |
| All Other Expenses | $27,960 | $9,906 | - | $37,866 |
| Occupancy | - | $33,554 | - | $33,554 |
| Insurance | $25,472 | - | - | $25,472 |
| Office Expenses | - | $22,107 | - | $22,107 |
| Fees for Services Accounting | - | $14,858 | - | $14,858 |
| Pension Plan Contributions | $11,192 | - | - | $11,192 |
| Other Expenses | $9,454 | $17,194 | - | $9,454 |
| Advertising | $4,681 | $3,672 | - | $8,353 |
| Fees for Services Other | - | $4,354 | - | $4,354 |
| Conferences and Meetings | $1,280 | - | - | $1,280 |
| Total Functional Expenses | $1,355,202 | $144,476 | $0 | $1,499,678 |
| Line Item | Amount |
|---|---|
| Fundraising Gross Income | $23,816 |
| Fundraising Direct Expenses | $11,767 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| Gift Card Raffle | $10,560 | $10,560 | $4,336 | $6,224 |
| Winter Festival | $5,595 | $5,595 | $2,705 | $2,890 |
| Total Events | $16,155 | $16,155 | $7,041 | $9,114 |
| Line Item | Beginning | End | Change |
|---|---|---|---|
| Receivables from Disqualified Persons | - | $0 | - |
| Receivables from Officers, Directors, Trustees, and Key Employees | - | $0 | - |
“The organization's policy is not to have the entire board review the form 990 prior to filing. Management and the board president review the return prior to filing.”
“Organization and board members are required to disclose annually any conflicts of interest.”
“The school director's salary is reviewed annually during the budget process by at least one member of the board of trustees.”
“Printed copies of the governing documents, conflict of interest policy, and financial statements for londonderry school are made available to the public upon request.”
“Londonderrys mission is to help each child reach his/her full potential in a loving, safe, supportive and fun atmosphere. Londonderry children learn at their own pace to think logically, critically and creatively, and to appreciate the unique qualities and life experiences of each person. A partnership among parents, children and faculty fosters each childs self-esteem, independence, responsibility and sense of belonging to a larger, diverse community and world.”
“Part x, line 2: the school has adopted the provisions of fasb asc topic 740, related to accounting for uncertainty in income taxes. The school recognizes the benefits or liability associated with a tax position during the period which, based on all available evidence, management believes it is more than 50 percent probable that the position will be sustained upon examination, including the resolution of appeals or litigation processes, if any. Any interest or penalty associated with such positions would be recorded in the statement of activities and any related accrual would be recognized on the statements of financial position. Management is not aware of any uncertain tax positions that the school has taken. Generally, the statute of limitations for filed returns is three years from the date of filing.”
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 | 28645 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 31133 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 1439 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 2014 |
| IRS990/AcctCompileOrReviewBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | The Londonderry School provides private pre-school and elementary education for approximately 200 students and seeks to help each child reach his/her full potential in a loving, safe, supportive, and fun atmosphere. |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 3672 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 4681 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 8353 |
| IRS990/AllOtherContributionsAmt | 0 | 247466 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 9906 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 27960 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 37866 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BackupWthldComplianceInd | 0 | true |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 0 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | LONDONDERRY SCHOOL |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 7175400543 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 1800 BAMBERGER ROAD |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | HARRISBURG |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | PA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 17110 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 333476 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 41111 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 46125 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 46125 |
| IRS990/CompDisqualPersonsGrp/TotalAmt | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | true |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 1280 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 1280 |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 257160 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 9218 |
| IRS990/CYOtherExpensesAmt | 0 | 424165 |
| IRS990/CYOtherRevenueAmt | 0 | 12049 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 1003208 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -218043 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1075513 |
| IRS990/CYTotalExpensesAmt | 0 | 1499678 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 1281635 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 9001 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 27300 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 98657 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 98657 |
| IRS990/Desc | 0 | The Londonderry School provides private pre-school and elementary education for approximately 200 students and seeks to help each child reach his/her full potential in a loving, safe, supportive, and fun atmosphere. Londonderry children learn at their own pace to think logically, critically and creatively, and to appreciate the unique qualities and life experiences of each person. A partnership among parents, children, and faculty fosters each child's self-esteem, independence, responsibility and sense of belonging to a larger, diverse community and world. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 12597 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 15597 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | true |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 39 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 1355202 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 14858 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 14858 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesLobbyingGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesManagementGrp/TotalAmt | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 4354 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 4354 |
| IRS990/FeesForServicesProfFundraising/TotalAmt | 0 | 0 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 0 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignGrantsGrp/TotalAmt | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form1098CFiledInd | 0 | false |
| IRS990/Form8282FiledCnt | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form8899Filedind | 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/AverageHoursPerWeekRltdOrgRt | 8 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 9 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 10 | 0.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 38.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 2.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.50 |
| 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/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | 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/PersonNm | 0 | CHRISTINA LUO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | KRISTIN JENKO |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | THERESA WILSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | BRIAN HOPE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | LAURA EICHHAMMER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | RONALD MELUSKY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | COLETTE CLARK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | AMANDA FULLMER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | ADAM TURK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | MAIYA HARRIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | ANGELA FAULKNER |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 46125 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/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/TitleTxt | 0 | Director |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | President |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Vice President |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | Trustee |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | false |
| IRS990/FormationYr | 0 | 1971 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingDirectExpensesAmt | 0 | 11767 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 23816 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 11 |
| IRS990/GovernmentGrantsAmt | 0 | 9694 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 0 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 1293402 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | true |
| IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 11 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 0 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 25472 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 25472 |
| IRS990/IntangibleAssetsGrp/BOYAmt | 0 | 11522 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 7332 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 38831 |
| IRS990/InterestGrp/TotalAmt | 0 | 38831 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 9218 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 9218 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsProgramRelatedGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 80728 |
| IRS990/IRPDocumentCnt | 0 | 6 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 1920426 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 1913852 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 1815194 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 3735620 |
| IRS990/LegalDomicileStateCd | 0 | PA |
| 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 | The Londonderry School provides private pre-school and elementary education for approximately 200 students and seeks to help each child reach his/her full potential in a loving, safe, supportive, and fun atmosphere. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
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| IRS990/MortgNotesPyblScrdInvstPropGrp/EOYAmt | 0 | 942535 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 1189181 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 971138 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 12049 |
| IRS990/NetIncomeFromGamingGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 1176584 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 955541 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 33554 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 33554 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 22107 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 22107 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 1 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 3 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 101445 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 101445 |
| IRS990/OtherExpensesGrp/Desc | 0 | Repairs & Maintenance |
| IRS990/OtherExpensesGrp/Desc | 1 | Special Programs |
| IRS990/OtherExpensesGrp/Desc | 2 | Snack and Drink Expenses |
| IRS990/OtherExpensesGrp/Desc | 3 | After School Expenses |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 17194 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 85471 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 14021 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 12693 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 9454 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 102665 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 14021 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 12693 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 9454 |
| IRS990/OtherRevenueTotalAmt | 0 | 0 |
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| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 848134 |
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| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PaymentsToAffiliatesGrp/TotalAmt | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 68617 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 68617 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 11192 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 11192 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 0 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 902 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 1502 |
| IRS990/PrincipalOfficerNm | 0 | KRISTIN JENKO |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611600 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | Tuition & Fees |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 1003208 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 1003208 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 250165 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | -6885 |
| IRS990/PymtTravelEntrtnmntPubOfclGrp/TotalAmt | 0 | 0 |
| IRS990/PYOtherExpensesAmt | 0 | 437201 |
| IRS990/PYOtherRevenueAmt | 0 | 75871 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 1207060 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -119394 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 1208404 |
| IRS990/PYTotalExpensesAmt | 0 | 1645605 |
| IRS990/PYTotalRevenueAmt | 0 | 1526211 |
| IRS990/QuidProQuoContributionsInd | 0 | false |
| IRS990/RcvblFromDisqualifiedPrsnGrp/EOYAmt | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
| IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -218043 |
| 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/RoyaltiesGrp/TotalAmt | 0 | 0 |
| IRS990/RoyaltiesRevenueGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 24222 |
| 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 | 1694665 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 1798286 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 3492951 |
| IRS990ScheduleD/CYEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 355 |
| IRS990ScheduleD/CYEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 92002 |
| IRS990ScheduleD/CYEndwmtFundGrp/ContributionsAmt | 0 | 27942 |
| IRS990ScheduleD/CYEndwmtFundGrp/EndYearBalanceAmt | 0 | 129059 |
| IRS990ScheduleD/CYEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 9470 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 270 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 53707 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/ContributionsAmt | 0 | 34667 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 92002 |
| IRS990ScheduleD/CYMinus1YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 3898 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 270 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 28832 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/ContributionsAmt | 0 | 25616 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 53707 |
| IRS990ScheduleD/CYMinus2YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | -471 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 270 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 26594 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 28832 |
| IRS990ScheduleD/CYMinus3YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 2508 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/AdministrativeExpensesAmt | 0 | 270 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/BeginningYearBalanceAmt | 0 | 25579 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/EndYearBalanceAmt | 0 | 26594 |
| IRS990ScheduleD/CYMinus4YrEndwmtFundGrp/InvestmentEarningsOrLossesAmt | 0 | 1285 |
| IRS990ScheduleD/EndowmentsHeldRelatedOrgInd | 0 | false |
| IRS990ScheduleD/EndowmentsHeldUnrelatedOrgInd | 0 | false |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 12639 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 71561 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 84200 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 102236 |
| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 102236 |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 5654 |
| IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt | 0 | 50579 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 56233 |
| IRS990ScheduleD/RelatedOrgListSchRInd | 0 | false |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | PART X, LINE 2: THE SCHOOL HAS ADOPTED THE PROVISIONS OF FASB ASC TOPIC 740, RELATED TO ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES. THE SCHOOL RECOGNIZES THE BENEFITS OR LIABILITY ASSOCIATED WITH A TAX POSITION DURING THE PERIOD WHICH, BASED ON ALL AVAILABLE EVIDENCE, MANAGEMENT BELIEVES IT IS MORE THAN 50 PERCENT PROBABLE THAT THE POSITION WILL BE SUSTAINED UPON EXAMINATION, INCLUDING THE RESOLUTION OF APPEALS OR LITIGATION PROCESSES, IF ANY. ANY INTEREST OR PENALTY ASSOCIATED WITH SUCH POSITIONS WOULD BE RECORDED IN THE STATEMENT OF ACTIVITIES AND ANY RELATED ACCRUAL WOULD BE RECOGNIZED ON THE STATEMENTS OF FINANCIAL POSITION. MANAGEMENT IS NOT AWARE OF ANY UNCERTAIN TAX POSITIONS THAT THE SCHOOL HAS TAKEN. GENERALLY, THE STATUTE OF LIMITATIONS FOR FILED RETURNS IS THREE YEARS FROM THE DATE OF FILING. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | Part X : FIN48 Footnote |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 1815194 |
| IRS990ScheduleE/ComplianceWithRevProc7550Ind | 0 | true |
| IRS990ScheduleE/DiscriminateRaceAdmissPlcyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceAthltProgInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceEducPlcyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceEmplmFcultyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceOtherActyInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceSchsInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceStdntsRghtsInd | 0 | false |
| IRS990ScheduleE/DiscriminateRaceUseOfFcltsInd | 0 | false |
| IRS990ScheduleE/GovernmentFinancialAidRcvdInd | 0 | true |
| IRS990ScheduleE/GovernmentFinancialAidRvkdInd | 0 | false |
| IRS990ScheduleE/MaintainCpyOfAllSolInd | 0 | true |
| IRS990ScheduleE/MaintainCpyOfBrochuresEtcInd | 0 | true |
| IRS990ScheduleE/MaintainRacialCompRecsInd | 0 | true |
| IRS990ScheduleE/MaintainScholarshipsRecsInd | 0 | true |
| IRS990ScheduleE/NondiscriminatoryPolicyStmtInd | 0 | true |
| IRS990ScheduleE/PlcyPblczdViaBroadcastMediaInd | 0 | true |
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