Liabilities / Assets
87th percentile
Higher debt load relative to assets than 87% of similar nonprofits.
EIN 83-3710153 • 501(c)3 • Racine, WI
Profile
Our mission at sonnenberg schools is to provide an educational environment that is loving, safe, and supportive, focused on preparing students with unique learning needs academically, socially, and emotionally for their future lives of success.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
87th percentile
Higher debt load relative to assets than 87% of similar nonprofits.
Liabilities / Revenue
65th percentile
Higher debt load relative to revenue than 65% of similar nonprofits.
Net Margin
42nd percentile
Higher net margin than 42% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
64th percentile
Faster asset growth than 64% of similar nonprofits.
Revenue Growth
82nd percentile
Faster revenue growth than 82% of similar nonprofits.
Assets
Up$760,832
Up $171,079 (+29%) from 2023
Liabilities
Down$205,415
Down $187,406 (-48%) from 2023
Net Assets
Up$555,417
Up $358,485 (+182%) from 2023
Revenue
Up$2,742,177
Up $636,321 (+30%) from 2023
Expenses
Up$2,383,692
Up $296,083 (+14%) from 2023
Net Income
Up$358,485
Up $340,238 (+1865%) from 2023
Most recent year
2024 • Form 990Detailed filing. Detailed filing data is available for this year.
To provide an educational environment that is loving, safe, and supportive, focused on preparing students academically, socially, and emotionally for their future lives of success.
To provide an educational environment that prepares students for a successful future.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $403,497 | $370,005 | ▼ $33,492 |
| Cash and Non-Interest-Bearing Accounts | $102,709 | $359,058 | ▲ $256,349 |
| Accounts Receivable | $77,991 | $27,899 | ▼ $50,092 |
| Prepaid Expenses and Deferred Charges | $5,556 | $3,870 | ▼ $1,686 |
| Total Assets | $589,753 | $760,832 | ▲ $171,079 |
| Liabilities | |||
| Mortgage Notes Payable Secured by Investment Property | $301,197 | $190,763 | ▼ $110,434 |
| Accounts Payable and Accrued Expenses | $91,624 | $14,652 | ▼ $76,972 |
| Total Liabilities | $392,821 | $205,415 | ▼ $187,406 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $196,932 | $555,417 | ▲ $358,485 |
| Total Net Assets Fund Balance | $196,932 | $555,417 | ▲ $358,485 |
| Total Liabilities and Net Assets / Fund Balance | $589,753 | $760,832 | ▲ $171,079 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Buildings | $269,485 | $21,246 | $290,731 |
| Equipment | $64,774 | $68,076 | $132,850 |
| Land | $35,746 | - | $35,746 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Ameila Fahnrich | Executive Director | FT | $110,000 | $3,150 | $113,150 |
| Name | Title |
|---|---|
| Farrah Sonnenberg | President |
| Jason Sonnenberg | Vice President |
| Nicole Ellish | Member |
| Jeff Winden | Secretary |
| Chris Plante | Treasurer |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $2,032,613 |
| Other Expenses | $351,079 |
| Total Fundraising Expense | $19,863 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $1,580,675 | $61,504 | $16,206 | $1,658,385 |
| Payroll Taxes | $143,678 | $5,590 | $1,473 | $150,741 |
| Fees for Services Other | - | $122,224 | - | $122,224 |
| Current Officers, Directors, Trustees, and Key Employees | $107,848 | $4,196 | $1,106 | $113,150 |
| Other Employee Benefits | $105,167 | $4,092 | $1,078 | $110,337 |
| Occupancy | $51,193 | $754 | - | $51,947 |
| Insurance | $1,190 | $34,065 | - | $35,255 |
| Office Expenses | - | $33,703 | - | $33,703 |
| Depreciation Depletion | $33,006 | $486 | - | $33,492 |
| Interest | - | $16,352 | - | $16,352 |
| Advertising | $2,144 | $635 | - | $2,779 |
| Other Expenses | $3,100 | $1,809 | - | $1,809 |
| All Other Expenses | - | $26 | - | $26 |
| Total Functional Expenses | $2,048,300 | $315,529 | $19,863 | $2,383,692 |
| Line Item | Amount |
|---|---|
| Expenses per Audited Statements | $2,383,692 |
| Total Expenses per Audited Statements | $2,383,692 |
| Total Expenses per Form 990 | $2,383,692 |
| Expenses Not Reported on Financial Statements | $0 |
| Expenses Not Reported on Form 990 | $0 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“Board members farrah sonnenberg and jason sonnenberg are husband and wife.”
“The board provides information and assistance while the form is being compiled and reviews the completed form before submission.”
“Budget and salaries were presented to the board and board approval was required. The executive leadership salaries are research based against other school leaders in the state of wisconsin, and is commensurate with experience. All data was taken from the department of public instruction where public school employee's salaries are publicly reported. We have a payscale that was developed from this research for all school employees, and includes a 3% annual increase, as well as considers academic experiences (b.s., b.a., m.a., m.ed., and phd/edd) and years of experience in the field.”
“Copies of minutes and policies are available upon request from the administrative board.”
“The school is exempt from federal income tax under section 501(c)(3) of the u.s. Internal revenue code. The school is not considered a private foundation by the internal revenue service. The school does not consider any of its support and revenues to be unrelated business income and, accordingly, no provision for income taxes has been provided in the accompanying financial statements. The school evaluates its uncertain tax positions on an annual basis, and there have been no recorded uncertain tax positions recorded in 2024 and 2023. Therefore, no provision or liability for income taxes has been included on the financial statements. The school files various federal or state non-profit tax returns. The school is no longer subject to u.s. Federal or state examinations by tax authorities for tax years prior to 2021.”
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 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 91624 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 14652 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 77991 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 27899 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO PROVIDE AN EDUCATIONAL ENVIRONMENT THAT PREPARES STUDENTS FOR A SUCCESSFUL FUTURE. |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 635 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 2144 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 2779 |
| IRS990/AllOtherContributionsAmt | 0 | 15006 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 26 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 26 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 0 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | AMELIA FAHNRICH |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 2626715018 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 2015 FRANKLIN STREET |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | RACINE |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | WI |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 53403 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 102709 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 359058 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 1106 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 4196 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 107848 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 113150 |
| 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/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 15006 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 1666 |
| IRS990/CYOtherExpensesAmt | 0 | 351079 |
| IRS990/CYOtherRevenueAmt | 0 | 6468 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 2719037 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 358485 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 2032613 |
| IRS990/CYTotalExpensesAmt | 0 | 2383692 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 19863 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 2742177 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 486 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 33006 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 33492 |
| IRS990/Desc | 0 | K-12 PRIVATE SCHOOL EDUCATION FOR CHILDREN WITH DISABILITIES: ONE OF THE FEW ORGANIZATIONS IN THE COUNTRY DESIGNED SPECIFICALLY TO MEET THE NEEDS OF STUDENTS ON THE AUTISM SPECTRUM, SONNENBERG SCHOOLS ENSURES THAT ALL STUDENTS RECEIVE AN OUTSTANDING EDUCATION FROM HIGHLY QUALIFIED AND CARING EDUCATORS. WE WORK TO HELP EVERY CHILD DEVELOP HIS OR HER UNIQUE GIFTS AND TALENTS TO THE FULLEST POTENTIAL. STUDENTS GROW INTELLECTUALLY AND SOCIALLY READY TO TACKLE ANY CHALLENGE IN OR OUTSIDE OF SCHOOL.K-12 VIRTUAL SCHOOL EDUCATION FOR CHILDREN WITH DISABILITIES: THROUGH OUR FULLY REMOTE, FLEXIBLE PROGRAM, WE ENSURE THAT EVERY STUDENT RECEIVES THE PERSONALIZED SUPPORT THEY NEED TO SUCCEED ACADEMICALLY AND SOCIALLY, REGARDLESS OF THEIR LOCATION.OUR VIRTUAL PROGRAM IS DESIGNED WITH FLEXIBILITY AT ITS CORE, ALLOWING STUDENTS TO LEARN AT THEIR OWN PACE WITH A SCHEDULE THAT ACCOMMODATES THEIR UNIQUE NEEDS. WE OFFER SMALL CLASS SIZES TO ENSURE THAT EVERY CHILD RECEIVES FOCUSED ATTENTION FROM HIGHLY TRAINED EDUCATORS. THIS APPROACH ENSURES THAT EVERY CHILD CAN LEARN AT THEIR OWN PACE, WITHOUT THE PRESSURES OF TRADITIONAL CLASSROOM SETTINGS. ADDITIONALLY, SONNENBERG SCHOOLS OFFERS A FLEXIBLE SCHEDULE TO ACCOMMODATE THE UNIQUE NEEDS OF OUR STUDENTS AND THEIR FAMILIES, RECOGNIZING THE IMPORTANCE OF BALANCING ACADEMIC ACHIEVEMENT WITH PERSONAL WELL-BEING. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 0 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 47 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 2048300 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 1 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 122224 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 122224 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 20.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 40.00 |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
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| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 3150 |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | JASON SONNENBERG |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | CHRIS PLANTE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | JEFF WINDEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | NICOLE ELLISH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | AMEILA FAHNRICH |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 110000 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | EXECUTIVE DIRECTOR |
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| IRS990/FormationYr | 0 | 2019 |
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| IRS990/FSAuditedInd | 0 | 1 |
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| IRS990/GrossReceiptsAmt | 0 | 2742177 |
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| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
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| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 1190 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 35255 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 16352 |
| IRS990/InterestGrp/TotalAmt | 0 | 16352 |
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| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 1666 |
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| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 370005 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 459327 |
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| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
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| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | OUR MISSION AT SONNENBERG SCHOOLS IS TO PROVIDE AN EDUCATIONAL ENVIRONMENT THAT IS LOVING, SAFE, AND SUPPORTIVE, FOCUSED ON PREPARING STUDENTS WITH UNIQUE LEARNING NEEDS ACADEMICALLY, SOCIALLY, AND EMOTIONALLY FOR THEIR FUTURE LIVES OF SUCCESS. |
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| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 19719 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 10374 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 1809 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 20299 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 3100 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 40018 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 10374 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 3100 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 1809 |
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| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISCELLANEOUS REVENUE |
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| IRS990/OtherRevenueTotalAmt | 0 | 6468 |
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| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 61504 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 1580675 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 1658385 |
| IRS990/OwnWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 1473 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 5590 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 143678 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 150741 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 5556 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 3870 |
| IRS990/PrincipalOfficerNm | 0 | AMELIA FAHNRICH |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 611710 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 611710 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | TUITION |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | PROGRAM FEES |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 2629353 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 89684 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 2629353 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 89684 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 14067 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 2504 |
| IRS990/PYOtherExpensesAmt | 0 | 350388 |
| IRS990/PYOtherRevenueAmt | 0 | 719 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 2088566 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 18247 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 1737221 |
| IRS990/PYTotalExpensesAmt | 0 | 2087609 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 2105856 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 358485 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 0 |
| 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 | 2725505 |
| IRS990ScheduleA/SchoolInd | 0 | X |
| IRS990/ScheduleBRequiredInd | 0 | 0 |
| IRS990ScheduleD/BuildingsGrp/BookValueAmt | 0 | 269485 |
| IRS990ScheduleD/BuildingsGrp/DepreciationAmt | 0 | 21246 |
| IRS990ScheduleD/BuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 290731 |
| IRS990ScheduleD/EquipmentGrp/BookValueAmt | 0 | 64774 |
| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 68076 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 132850 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesNotRptFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 2383692 |
| IRS990ScheduleD/FootnoteTextInd | 0 | X |
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| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 35746 |
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| IRS990ScheduleD/RevenueNotReportedFinclStmtAmt | 0 | 0 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 2742177 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | THE SCHOOL IS EXEMPT FROM FEDERAL INCOME TAX UNDER SECTION 501(C)(3) OF THE U.S. INTERNAL REVENUE CODE. THE SCHOOL IS NOT CONSIDERED A PRIVATE FOUNDATION BY THE INTERNAL REVENUE SERVICE. THE SCHOOL DOES NOT CONSIDER ANY OF ITS SUPPORT AND REVENUES TO BE UNRELATED BUSINESS INCOME AND, ACCORDINGLY, NO PROVISION FOR INCOME TAXES HAS BEEN PROVIDED IN THE ACCOMPANYING FINANCIAL STATEMENTS. THE SCHOOL EVALUATES ITS UNCERTAIN TAX POSITIONS ON AN ANNUAL BASIS, AND THERE HAVE BEEN NO RECORDED UNCERTAIN TAX POSITIONS RECORDED IN 2024 AND 2023. THEREFORE, NO PROVISION OR LIABILITY FOR INCOME TAXES HAS BEEN INCLUDED ON THE FINANCIAL STATEMENTS. THE SCHOOL FILES VARIOUS FEDERAL OR STATE NON-PROFIT TAX RETURNS. THE SCHOOL IS NO LONGER SUBJECT TO U.S. FEDERAL OR STATE EXAMINATIONS BY TAX AUTHORITIES FOR TAX YEARS PRIOR TO 2021. |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART X, LINE 2: |
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| IRS990ScheduleD/TotalExpensesPerForm990Amt | 0 | 2383692 |
| IRS990ScheduleD/TotalRevenuePerForm990Amt | 0 | 2742177 |
| IRS990ScheduleD/TotalRevEtcAuditedFinclStmtAmt | 0 | 2742177 |
| IRS990ScheduleD/TotExpnsEtcAuditedFinclStmtAmt | 0 | 2383692 |
| 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 | 1 |
| IRS990ScheduleE/GovernmentFinancialAidRvkdInd | 0 | 0 |
| IRS990ScheduleE/MaintainCpyOfAllSolInd | 0 | 1 |
| IRS990ScheduleE/MaintainCpyOfBrochuresEtcInd | 0 | 1 |
| IRS990ScheduleE/MaintainRacialCompRecsInd | 0 | 1 |
| IRS990ScheduleE/MaintainScholarshipsRecsInd | 0 | 1 |
| IRS990ScheduleE/NondiscriminatoryPolicyStmtInd | 0 | 1 |
| IRS990ScheduleE/PlcyPblczdViaBroadcastMediaInd | 0 | 1 |
| IRS990ScheduleE/PolicyStmtInBrochuresEtcInd | 0 | 1 |
| IRS990ScheduleE/SupplementalInformationDetail/ExplanationTxt | 0 | THE ORGANIZATION POSTS AN ANNOUNCEMENT ON THEIR WEBSITE. THE POLICY IS ALSO PROVIDED TO ALL FAMILIES AND STAFF AT THE START OF EACH YEAR. |
| IRS990ScheduleE/SupplementalInformationDetail/ExplanationTxt | 1 | THE ORGANIZATION PARTICIPATES IN THE SPECIAL NEEDS SCHOLARSHIP CHOICE PROGRAM ADMINISTERED BY THE WISCONSIN DEPARTMENT OF PUBLIC INSTRUCTION. THE PROGRAM PROVIDES SUPPORT IN THE FORM OF A TUITION VOUCHER TO LOW INCOME FAMILIES THAT ENROLL IN THE SCHOOL. |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | SCHEDULE E, PART I, LINE 3 |
| IRS990ScheduleE/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | SCHEDULE E, PART I, LINE 6 |
| IRS990/ScheduleJRequiredInd | 0 | 0 |
| IRS990/ScheduleORequiredInd | 0 | 1 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | BOARD MEMBERS FARRAH SONNENBERG AND JASON SONNENBERG ARE HUSBAND AND WIFE. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE BOARD PROVIDES INFORMATION AND ASSISTANCE WHILE THE FORM IS BEING COMPILED AND REVIEWS THE COMPLETED FORM BEFORE SUBMISSION. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | BUDGET AND SALARIES WERE PRESENTED TO THE BOARD AND BOARD APPROVAL WAS REQUIRED. THE EXECUTIVE LEADERSHIP SALARIES ARE RESEARCH BASED AGAINST OTHER SCHOOL LEADERS IN THE STATE OF WISCONSIN, AND IS COMMENSURATE WITH EXPERIENCE. ALL DATA WAS TAKEN FROM THE DEPARTMENT OF PUBLIC INSTRUCTION WHERE PUBLIC SCHOOL EMPLOYEE'S SALARIES ARE PUBLICLY REPORTED. WE HAVE A PAYSCALE THAT WAS DEVELOPED FROM THIS RESEARCH FOR ALL SCHOOL EMPLOYEES, AND INCLUDES A 3% ANNUAL INCREASE, AS WELL AS CONSIDERS ACADEMIC EXPERIENCES (B.S., B.A., M.A., M.ED., AND PHD/EDD) AND YEARS OF EXPERIENCE IN THE FIELD. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | COPIES OF MINUTES AND POLICIES ARE AVAILABLE UPON REQUEST FROM THE ADMINISTRATIVE BOARD. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PART VI, SECTION A, LINE 2 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PART VI, SECTION B, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PART VI, SECTION B, LINE 15 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PART VI, SECTION C, LINE 19 |
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| IRS990/SignificantChangeInd | 0 | 0 |
| IRS990/SignificantNewProgramSrvcInd | 0 | 0 |
| IRS990/SubjectToExcsTaxNetInvstIncInd | 0 | 0 |
| IRS990/SubjectToProxyTaxInd | 0 | 0 |
| IRS990/SubjToTaxRmnrtnExPrchtPymtInd | 0 | 0 |
| IRS990/TaxablePartyNotificationInd | 0 | 0 |
| IRS990/TaxExemptBondsInd | 0 | 0 |
| IRS990/TerminateOperationsInd | 0 | 0 |
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| IRS990/TotalAssetsGrp/EOYAmt | 0 | 760832 |
| IRS990/TotalCompGreaterThan150KInd | 0 | 0 |
| IRS990/TotalContributionsAmt | 0 | 15006 |
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| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 2048300 |
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| IRS990/TotalGrossUBIAmt | 0 | 0 |
| IRS990/TotalLiabilitiesBOYAmt | 0 | 392821 |
| IRS990/TotalLiabilitiesEOYAmt | 0 | 205415 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 392821 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 205415 |
| IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt | 0 | 196932 |
| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 555417 |
| IRS990/TotalOtherCompensationAmt | 0 | 3150 |
| IRS990/TotalProgramServiceExpensesAmt | 0 | 2048300 |
| IRS990/TotalProgramServiceRevenueAmt | 0 | 2719037 |
| IRS990/TotalReportableCompFromOrgAmt | 0 | 110000 |
| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 1666 |
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| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 2742177 |
| IRS990/TotalRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/TotalVolunteersCnt | 0 | 5 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 589753 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 760832 |
| IRS990/TotReportableCompRltdOrgAmt | 0 | 0 |
| IRS990/TrnsfrExmptNonChrtblRltdOrgInd | 0 | 0 |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | 0 |
| IRS990/UponRequestInd | 0 | X |
| IRS990/USAddress/AddressLine1Txt | 0 | 2015 FRANKLIN STREET |
| IRS990/USAddress/CityNm | 0 | RACINE |
| IRS990/USAddress/StateAbbreviationCd | 0 | WI |
| IRS990/USAddress/ZIPCd | 0 | 53403 |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 5 |
| IRS990/VotingMembersIndependentCnt | 0 | 5 |
| IRS990/WebsiteAddressTxt | 0 | WWW.SONNENBERGSCHOOLS.ORG |
| IRS990/WhistleblowerPolicyInd | 0 | 0 |
| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | 1 |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | AMELIA FAHNRICH |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | EXECUTIVE DIRECTOR |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 2626715018 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2025-02-17 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | SONNENBERG SCHOOL INC |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | SONN |
| ReturnHeader/Filer/EIN | 0 | 833710153 |
| ReturnHeader/Filer/PhoneNum | 0 | 2626715018 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | 2015 FRANKLIN STREET |
| ReturnHeader/Filer/USAddress/CityNm | 0 | RACINE |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | WI |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 53403 |
| ReturnHeader/IRSResponsiblePrtyInfoCurrInd | 0 | 0 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 363168081 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | SIKICH LLC |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 17335 GOLF PARKWAY SUITE 500 |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | BROOKFIELD |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | WI |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 53045 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 2627549400 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2025-02-17 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | JILL M BOYLE CPA |
| ReturnHeader/ReturnTs | 0 | 2025-02-20T14:42:47-06:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990 |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2023-07-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2024-06-30 |
| ReturnHeader/TaxYr | 0 | 2023 |
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