| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
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| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 1269386 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 701167 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 649615 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | CANNON SCHOOL WAS FOUNDED IN 1968 AND IS A NON-PROFIT, INDEPENDENT SCHOOL THAT FOCUSES ON THE INDIVIDUAL STUDENT. THE SCHOOL OCCUPIES A 65-ACRE CAMPUS JUST OFF THE I-85 CORRIDOR IN CONCORD, NC. APPROXIMATELY 975 STUDENTS WERE ENROLLED AT THE SCHOOL DURING THE FISCAL YEAR 2015 IN GRADES JUNIOR KINDERGARTEN THROUGH 12TH GRADE. CANNON ENCOURAGES STUDENTS TO STRETCH TO THEIR FULLEST POTENTIAL AND BECOME ENGAGED STUDENTS AND OUTSTANDING CITIZENS. CANNON'S LOWER SCHOOL STRESSES ACADEMIC EXCELLENCE, WITH A BALANCE OF ENRICHMENT OPPORTUNITIES AND AN EMPHASIS ON CHARACTER DEVELOPMENT. CANNON'S MIDDLE SCHOOL PROVIDES A CLIMATE FOR EMERGING YOUNG ADULTS TO NURTURE THEIR LOVE OF LEARNING, STRENGTHEN THEIR SELF CONCEPT, AND EXPLORE EXTRACURRICULAR ACTIVITIES. CANNON'S UPPER SCHOOL DEDICATES ITSELF TO DEVELOPING TEACHING PRACTICES AND CURRICULUM THAT EQUIP STUDENTS TO LEARN HOW TO LEARN AND IS BASED ON A TRADITIONAL COLLEGE PREPARATORY CURRICULUM. |
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| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 113075 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 226150 |
| IRS990/AllOtherContributionsAmt | 0 | 912792 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 67034 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 150856 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 295887 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 513777 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | ANDREA TREMBATH |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 7047868171 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 5801 POPLAR TENT ROAD |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | CONCORD |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NC |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 28027 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 6271080 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 6621860 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
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| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 576390 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 576390 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContriRptFundraisingEventAmt | 0 | 29843 |
| IRS990/CostOfGoodsSoldAmt | 0 | 84537 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 942635 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 2594453 |
| IRS990/CYInvestmentIncomeAmt | 0 | 62371 |
| IRS990/CYOtherExpensesAmt | 0 | 5444070 |
| IRS990/CYOtherRevenueAmt | 0 | 72038 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 19900931 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 692933 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 12246519 |
| IRS990/CYTotalExpensesAmt | 0 | 20285042 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 544541 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 20977975 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 1 |
| IRS990/DeferredRevenueGrp/BOYAmt | 0 | 5795290 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 6153035 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 1509405 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 1509405 |
| IRS990/Desc | 0 | Instruction - Primary and secondary education which benefits students without regard to race, religion or national origin. The school served approximately 999 students during the 2015-16 school year. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 299 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/EscrowAccountInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 15899091 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 25926 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 25926 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 136664 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 136664 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ProgramServicesAmt | 0 | 41100 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 41100 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 21 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 22 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 23 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 24 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 25 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 2 | 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/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 15 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 18 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 19 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 20 | 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 |
| 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/OtherCompensationAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 21 | 44241 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 22 | 21332 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 23 | 35647 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 24 | 8085 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 25 | 10537 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | Kathy Bray |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Horace Bryan |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Fred Bryant |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Mark Fromke |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Tom Kabasakalian |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Jeff Leck |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | Steve McLeod |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Adam Ortiz |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Jon Ter Poorten |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Kim Reynolds |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | Susan Sanders |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | Richard Schachner Jr |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | Susan Schneider |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | Kym Selden |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | Scott Wickerham |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | Bianca Wittgraefe |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | Russ Andrews |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | Hans Peterson |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | Sharif Metwalli |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | Kristin Baker |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | Jim Michaels |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | Whitney Brown |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 22 | Matthew Gossage |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 23 | Deb Otey |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 24 | Blake Evans |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 25 | Patrick Moyer |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 21 | 111342 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 22 | 434987 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 23 | 113077 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 24 | 110653 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 25 | 134742 |
| 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/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 22 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 23 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 25 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Trustee |
| 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 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | Board Chair |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | Vice Chair |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | Director of Business/Finan |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | Head of School |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 23 | Head of Upper School |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 24 | Director of Advancement |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 25 | Director of Athletics |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1968 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingAmt | 0 | 29843 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 28641 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 27691 |
| IRS990/GainOrLossGrp/OtherAmt | 0 | 5042 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -95799 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 21 |
| IRS990/GrantAmt | 0 | 2594453 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 2594453 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 2594453 |
| IRS990/GrantsToIndividualsInd | 0 | 1 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 1 |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 12006 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 872698 |
| IRS990/GrossReceiptsAmt | 0 | 22066614 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 19000 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 138525 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 21 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 5 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 44854 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 89842 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 134696 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 45604 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 91346 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 136950 |
| IRS990/InterestGrp/ProgramServicesAmt | 0 | 234790 |
| IRS990/InterestGrp/TotalAmt | 0 | 234790 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 49436 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 59649 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 153128 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 153128 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 6749551 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 7670619 |
| IRS990/InvestTaxExemptBondsInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 70 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 13699881 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 22197455 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 22496279 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 36196160 |
| IRS990/LegalDomicileStateCd | 0 | NC |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 6964 |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 968497 |
| IRS990/LessRentalExpensesGrp/RealAmt | 0 | 0 |
| 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 | PROVISION OF A QUALITY K-12 EDUCATIONAL PROGRAM WITHIN A SAFE, DIVERSE, AND CHALLENGING ENVIRONMENT. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 26285018 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 26754441 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -90757 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -90757 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | -950 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -950 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 53988 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 53988 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 19000 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 19000 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | -118704 |
| IRS990/NoncashContributionsAmt | 0 | 101668 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 288837 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 727584 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 1016421 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 66928 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 134058 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 200986 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OnBehalfOfIssuerInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 47976 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 281549 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | -104806 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 18728 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 119227 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 555647 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 693602 |
| IRS990/OtherExpensesGrp/Desc | 0 | curriculum expenses |
| IRS990/OtherExpensesGrp/Desc | 1 | summer camp |
| IRS990/OtherExpensesGrp/Desc | 2 | BOOSTER ORGANIZATIONS |
| IRS990/OtherExpensesGrp/Desc | 3 | athletic expenses |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 527763 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 309313 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 292388 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 137741 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 527763 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 309313 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 292388 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 137741 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 476429 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 832247 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 311375 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 1148561 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 8216581 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 9676517 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 22323 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 120242 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 584812 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 727377 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 12006 |