STRATEGY STUDIO / PUBLIC DATA EXPLORER

THE GROVE SCHOOL

Cite this

Plain text THE GROVE SCHOOL. Strategy Studio, nonprofit organization profile, tax years 2020–2024. https://strategystudio.org/org/330829596. Retrieved 2026-10-19.

APA Strategy Studio. (n.d.). THE GROVE SCHOOL [Nonprofit organization profile; tax years 2020–2024]. Retrieved October 19, 2026, from https://strategystudio.org/org/330829596

MLA “THE GROVE SCHOOL.” Strategy Studio, tax years 2020–2024, https://strategystudio.org/org/330829596. Accessed 19 Oct. 2026.

Retrieved 2026-10-19; covers tax years 2020–2024. Data: Strategy Studio, CC BY 4.0.

2024 · Form 990 · revenue $4.3M · expenses $4.4M · assets $2.3M

EIN
33-0829596
Address
200 NEVADA ST, REDLANDS, CA 92373-5385
Website
www.thegroveschool.org
NTEE code
B25
Subsection
501(c)(3)
Ruling year
2008
Cross-check
ProPublica Nonprofit Explorer

Mission

Grove High School is a California Public Charter School with a Montessori teaching philosophy that serves 238 students in grades 7-12.

Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).

People paid by the organization

1 person paid across every filing: current people first, then by total pay from this organization. Organizations counts every nonprofit each person appears on.

NameLatest titleYearsLatest year payTotal pay from hereOrganizations
Andrew Christopherson (former) Head of School2021-2023 $1,144,688$1,361,283 1

Officers and directors, no compensation reported

13 people listed on the returns with $0 (or no amount) in every compensation column: current people first. Hours are as filed on the latest return each person appears on.

NameLatest titleYearsHrs/wk (latest)CompensationOrganizations
Dean Silliman Member2023-2024 5 $0 reported 1
Damian Hobson Member2023-2024 5 $0 reported 1
MargaretAnn Harrison Secretary2020-2024 5 $0 reported 1
A Jay Munoz Trustee2020-2024 5 $0 reported 1
Ryan Schavrien Board Chair2022-2024 5 $0 reported 1
Keith Ceci Member2024 5 $0 reported 1
Susan Blauth (former) Member2022-2023 5 $0 reported 1
Mark Sigman (former) Vice-Chair2020-2023 5 $0 reported 1
Trevor Norton (former) Trustee2020-2022 5 $0 reported 1
Andrew Schadwinkel (former) Board Chair2020-2022 10 $0 reported 1
Michael Paisner (former) Treasurer2020 3 $0 reported 1
Jenessa Flores Parker (former) Trustee2020 1 $0 reported 1
Patrice Torrez (former) Trustee2020 1 $0 reported 1

People by year

2024 · 6 people listed · none paid · 56 employees · 12 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Dean Silliman Member5 $0$0$0 $01
Damian Hobson Member5 $0$0$0 $01
MargaretAnn Harrison Secretary5 $0$0$0 $01
A Jay Munoz Trustee5 $0$0$0 $01
Ryan Schavrien Board Chair5 $0$0$0 $01
Keith Ceci Member5 $0$0$0 $01
2023 · 8 people listed · 1 paid, $1.1M · 59 employees · 5 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Andrew Christopherson Head of School40 $1,116,994$0$27,694 $1,144,6881
Susan Blauth Member5 $0$0$0 $01
Dean Silliman Member5 $0$0$0 $01
Damian Hobson Member5 $0$0$0 $01
Mark Sigman Vice-Chair5 $0$0$0 $01
MargaretAnn Harrison Secretary5 $0$0$0 $01
A Jay Munoz Trustee5 $0$0$0 $01
Ryan Schavrien Board Chair10 $0$0$0 $01
2022 · 8 people listed · 1 paid, $109K · 59 employees · 10 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Andrew Christopherson Head of School50 $108,970$0$0 $108,9701
Trevor Norton Trustee5 $0$0$0 $01
Ryan Schavrien Member10 $0$0$0 $01
Susan Blauth Member5 $0$0$0 $01
Andrew Schadwinkel Board Chair10 $0$0$0 $01
Mark Sigman Vice-Chair5 $0$0$0 $01
MargaretAnn Harrison Secretary5 $0$0$0 $01
A Jay Munoz Trustee5 $0$0$0 $01
2021 · 6 people listed · 1 paid, $108K · 49 employees · 1 volunteer
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Andrew Christopherson Head of School40 $107,625$0$0 $107,6251
Andrew Schadwinkel Board Chair5 $0$0$0 $01
Mark Sigman Vice-Chair5 $0$0$0 $01
MargaretAnn Harrison Secretary5 $0$0$0 $01
A Jay Munoz Trustee5 $0$0$0 $01
Trevor Norton Trustee5 $0$0$0 $01
2020 · 8 people listed · none paid · 45 employees · 6 volunteers
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Andrew Schadwinkel Board Chair5 $0$0$0 $01
Mark Sigman Vice-Chair5 $0$0$0 $01
Michael Paisner Treasurer3 $0$0$0 $01
MargaretAnn Harrison Secretary3 $0$0$0 $01
Jenessa Flores Parker Trustee1 $0$0$0 $01
Patrice Torrez Trustee1 $0$0$0 $01
A Jay Munoz Trustee3 $0$0$0 $01
Trevor Norton Trustee1 $0$0$0 $01

Highest-paid independent contractors

No independent contractors reported.

Who gave

Contributor names are not public for this form type.

Public charities filing Form 990 or 990-EZ report large donors on Schedule B, but the IRS withholds their names and addresses from public copies. Private foundations (990-PF) are different: their contributors are public.

Finances

Newest first. Each filing: its name on one row, its figures on the row beneath. Greyed filings are superseded by a later return for the same period and are left out everywhere else on this page.

RevenueExpensesAssetsNet assetsContributionsProgram revenueOfficer payEmployeesVolunteers
2024 · Form 990 period ending 2025-06-30 · view filing · original 990 ↗
$4,298,393$4,380,086 $2,310,317$1,932,660 $4,188,706$65,212 $05612
2023 · Form 990 period ending 2024-06-30 · view filing · original 990 ↗
$3,730,352$3,476,541 $2,037,490$1,983,681 $3,628,751$59,787 $0595
2022 · Form 990 period ending 2023-06-30 · view filing · original 990 ↗
$3,143,488$3,027,220 $1,780,821$1,693,913 $2,981,192$161,327 $138,1655910
2021 · Form 990 period ending 2022-06-30 · view filing · original 990 ↗
$2,766,872$2,610,456 $1,638,765$1,549,451 $2,710,839$55,263 $107,625491
2020 · Form 990 period ending 2021-06-30 · view filing · original 990 ↗
$3,149,170$2,379,815 $1,479,924$1,423,441 $3,105,164$43,458 $0456

Funders of this organization

2 grantors reported grants to this organization, $112,500 in all, tax years 2013 to 2016. Exact: the grantor wrote this organization's EIN. Fuzzy: the grantor wrote only a name (foundations' 990-PF has no EIN field), matched to the same or a near-identical name in the same state; the name as filed is shown. From the latest return for each grantor and year, so amended returns aren't counted twice. CSV

GrantorTypeMatchYears givenGrantsTotalLatest yearLatest year's amountGrants
REDLANDS CONSERVANCY Public charity Exact 2013-2014 2$107,500 2014$100,000
show
COMMUNITY FOUNDATION SERVING WESTERN VIRGINIA DAF sponsor Exact 2016 1$5,000 2016$5,000
show

Similar organizations

Ranked without any AI: same NTEE code first, then the same NTEE group; then revenue within 2x, 5x or 10x; then the same state; then similar name and mission text. Same state only · More (100)

OrganizationStateNTEELatest revenueLatest expensesTop-paid titleTop payWhy similar
CREDO HIGH SCHOOLCAB25 $8,100,608$8,118,015 EXECUTIVE DI$149,143 Same NTEE code B25, revenue within 2x, same state
COMPASS HIGH SCHOOLCAB25 $2,261,871$2,160,802 Head of School$185,000 Same NTEE code B25, revenue within 2x, same state
RIVER VALLEY CHARTER SCHOOLCAB25 $3,446,571$3,523,261 Executive Dir.$166,392 Same NTEE code B25, revenue within 2x, same state
FIELD MIDDLE SCHOOLCAB25 $2,674,694$2,987,869 Head of School$214,935 Same NTEE code B25, revenue within 2x, same state
MIDLAND SCHOOL CORPORATIONCAB25 $7,651,980$7,953,311 HEAD OF SCHOOL (FORMER)$177,173 Same NTEE code B25, revenue within 2x, same state
NORTH COUNTY TRADE TECH HIGH SCHOOLCAB25 $3,862,610$3,837,988 PRINCIPAL$174,608 Same NTEE code B25, revenue within 2x, same state
MOUNT ALVERNO HIGH SCHOOLCAB25 $3,997,495$3,555,061 HEAD OF SCHOOL$145,168 Same NTEE code B25, revenue within 2x, same state
COLLEGIATE CHARTER HIGH SCHOOL OF LOS ANGELESCAB25 $3,284,754$3,930,944 EXECUTIVE DIRECTOR$168,147 Same NTEE code B25, revenue within 2x, same state
MAYBECK HIGH SCHOOL INCORPORATEDCAB25 $5,707,198$5,506,988 Dir College Couns$142,777 Same NTEE code B25, revenue within 2x, same state
INTERNATIONAL SCHOOL OF MONTEREYCAB25 $7,044,053$7,209,506 HEAD OF SCHOOL$191,594 Same NTEE code B25, revenue within 2x, same state
LEGACY SECONDARY SCHOOLS INCCAB25 $6,761,544$7,699,544 CHAIRMAN$88,333 Same NTEE code B25, revenue within 2x, same state
HERITAGE CHRISTIAN SCHOOL OFMISSION VIEJO INCCAB25 $3,123,860$3,772,943 Principal$120,000 Same NTEE code B25, revenue within 2x, same state
GEORGIANA BRUCE KIRBY PREPARATORY SCHOOLCAB25 $7,997,336$7,824,846 HEAD OF SCHOOL$414,942 Same NTEE code B25, revenue within 2x, same state
JULIA MORGAN SCHOOL FOR GIRLSCAB25 $5,607,916$5,527,025 HEAD OF SCHOOL$225,721 Same NTEE code B25, revenue within 2x, same state
CRISTO REY SAN DIEGO HIGH SCHOOL INCCAB25 $5,631,270$4,691,340 DIRECTOR OF ADVANCEMENT$120,586 Same NTEE code B25, revenue within 2x, same state
MESIVTA OF GREATER LOS ANGELESCAB25 $2,978,382$2,848,616 Director$40,247 Same NTEE code B25, revenue within 2x, same state
CALIFORNIA ASSOCIATION OF DIRECTORS OF ACTIVITIESCAB25 $5,061,430$5,058,106 LEADERSHIP DEV$129,104 Same NTEE code B25, revenue within 2x, same state
OPTIONS FOR YOUTH-SAN GABRIEL INCCAB25 $8,137,371$7,855,980 ASSISTANT PRINCIPAL$189,387 Same NTEE code B25, revenue within 2x, same state
ADVAITA SOCIETYCAB25 $4,903,434$5,340,581 Head of School$128,750 Same NTEE code B25, revenue within 2x, same state
INSTITUTE FOR ARTS AND CULTURE INCCAB25 $2,173,380$2,486,810 Secretary$48,000 Same NTEE code B25, revenue within 2x, same state
EMPOWERMENT THROUGH ACTIONCAB25 $2,442,422$128,256 PRES. / CO E.D.$0 Same NTEE code B25, revenue within 2x, same state
INTELLECTUAL VIRTUES ACADEMY OF LONG BEACHCAB25 $5,695,153$5,835,086 Principal$159,857 Same NTEE code B25, revenue within 2x, same state
HAPPY VALLEY FOUNDATIONCAB25 $5,778,377$5,734,103 Not reported$213,440 Same NTEE code B25, revenue within 2x, same state
ATHENA ACADEMY INCCAB25 $2,706,093$2,777,498 Head of School$204,825 Same NTEE code B25, revenue within 2x, same state
PSASB INCCAB25 $7,293,699$7,371,495 Principal$214,830 Same NTEE code B25, revenue within 2x, same state

Who funds organizations like this

Grantors that funded the 100 most similar organizations. Ranked by total given to them. Foundations (990-PF) and donor-advised fund sponsors only. Same matching as Funders above (by EIN, or by name for foundations).

GrantorTypeTotal givenGrantsOrganizations fundedYearsWhich ones
FIDELITY INVESTMENTS CHARITABLE GIFT FUND DAF sponsor$18,022,612256 522016–2024 CAMBRIDGE SCHOOL OF DALLAS; CRISTO REY NEW YORK HIGH SCHOOL; DARAJA EDUCATION FUND; THE WASHINGTON SCHOOL FOR GIRLS and 48 more
DONOR ADVISED CHARITABLE GIVING DAF sponsor$10,940,036191 422014–2024 DARAJA EDUCATION FUND; CRISTO REY SAN DIEGO HIGH SCHOOL INC; THE WASHINGTON SCHOOL FOR GIRLS; CAMBRIDGE SCHOOL OF DALLAS and 38 more
NATIONAL CHRISTIAN CHARITABLE FOUNDATION DAF sponsor$5,074,67676 222012–2024 VAIL CHRISTIAN SCHOOL INC; DOMINION CHRISTIAN SCHOOLS INC; TRINITY CHRISTIAN SCHOOL INC; CAMBRIDGE SCHOOL OF DALLAS and 18 more
JOHN TEMPLETON FOUNDATION Private foundation$4,421,80817 12012–2021 INTELLECTUAL VIRTUES ACADEMY OF LONG BEACH
RECO FOUNDATION Private foundation$4,190,0004 12019–2023 CRISTO REY RICHMOND HIGH SCHOOL INC
TAMMIS DAY FOUNDATION Private foundation$4,000,0004 12020–2023 OLDFIELDS SCHOOL INC
THE COMMUNITY FOUNDATION OF HARRISONBURG AND ROCKINGHAM COUNTY DAF sponsor$3,807,93814 12010–2024 EASTERN MENNONITE SCHOOL
FORGOOD INC DAF sponsor$3,633,58861 172010–2024 PINEY WOODS SCHOOL; GIFFT HILL SCHOOL INC; CRISTO REY SAN DIEGO HIGH SCHOOL INC; DARAJA EDUCATION FUND and 13 more
VANGUARD CHARITABLE ENDOWMENT PROGRAM DAF sponsor$2,848,66049 182020–2024 BUXTON SCHOOL INC; DARAJA EDUCATION FUND; CRISTO REY NEW YORK HIGH SCHOOL; THE WASHINGTON SCHOOL FOR GIRLS and 14 more
GREATER WASHINGTON COMMUNITY FOUNDATION DAF sponsor$2,029,18116 22009–2024 THE WASHINGTON SCHOOL FOR GIRLS; PINEY WOODS SCHOOL
AMERICAN ONLINE GIVING FOUNDATION INC DAF sponsor$1,955,03190 312019–2024 GEORGIANA BRUCE KIRBY PREPARATORY SCHOOL; CRISTO REY NEW YORK HIGH SCHOOL; LAKE WASHINGTON GIRLS MIDDLE SCHOOL; ATHENA ACADEMY INC and 27 more
NATIONAL PHILANTHROPIC TR DAF sponsor$1,832,02654 212014–2024 ADVAITA SOCIETY; CRISTO REY RICHMOND HIGH SCHOOL INC; DARAJA EDUCATION FUND; CRISTO REY SAN DIEGO HIGH SCHOOL INC and 17 more
CLARK CHARITABLE FOUNDATION INC Private foundation$1,800,0002 12020–2024 THE WASHINGTON SCHOOL FOR GIRLS
AMERICAN ENDOWMENT FOUNDATION DAF sponsor$1,713,94457 232016–2024 DARAJA EDUCATION FUND; OPEN SCHOOL INC; STATESVILLE CHRISTIAN SCHOOL INC; INTELLECTUAL VIRTUES ACADEMY OF LONG BEACH and 19 more
OREGON COMMUNITY FOUNDATION DAF sponsor$1,649,95111 12014–2024 OPEN SCHOOL INC

The full list · all similar organizations

Where the money went

Every expense line on each return, biggest first: Form 990 Part IX (with its program, management and fundraising columns), 990-EZ Part I, or 990-PF Part I. Event marks lines the organization itself describes as events. “Events” in each summary adds those lines, conferences and meetings, and the direct costs of fundraising events. Unusual is not the same as improper. Many of these patterns have ordinary explanations. Check the filing.

2024 · Form 990 · $4,380,086 spent · pay $3,269,388 · grants $0 · events $4,950
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $2,467,046$1,939,846$527,200$0 56.3%
Occupancy $639,119$0$639,119$0 14.6%
Pension plan contributions $504,311$371,442$132,869$0 11.5%
Other employee benefits $189,924$149,318$40,606$0 4.3%
Payroll taxes $108,107$72,718$35,389$0 2.5%
Fees: other services $107,263$32,106$75,157$0 2.4%
Other (as described)Universal Meals Program $92,985$92,985$0$0 2.1%
Other (as described)Student Materials/Extracurriculars $73,697$73,697$0$0 1.7%
Information technology $71,873$12,353$59,520$0 1.6%
Insurance $34,991$0$34,991$0 0.8%
Fees: management $30,249$0$30,249$0 0.7%
Other (as described)Field Trips/Key Experiences/Farm $18,886$18,886$0$0 0.4%
Office expenses $12,922$3,714$9,208$0 0.3%
Fees: legal $6,964$0$6,964$0 0.2%
Travel $6,816$3,921$2,895$0 0.2%
Conferences, conventions and meetings $4,950$3,164$1,786$0 0.1%
Fees: accounting $4,641$0$4,641$0 0.1%
Other (as described)Graduation $3,286$3,286$0$0 0.1%
Advertising and promotion $2,056$0$2,056$0 0.0%
Total$4,380,086100%

View the filing

2023 · Form 990 · $3,476,541 spent · pay $2,760,236 · grants $0 · events $11,694
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $2,043,987$1,672,822$371,165$0 58.8%
Pension plan contributions $427,729$334,767$92,962$0 12.3%
Occupancy $258,519$526$257,993$0 7.4%
Other employee benefits $205,967$165,345$40,622$0 5.9%
Other (as described)Universal Meals Program $192,326$190,901$1,425$0 5.5%
Payroll taxes $82,553$59,610$22,943$0 2.4%
Other (as described)Student Materials/Extracurriculars $42,081$42,081$0$0 1.2%
Fees: other services $38,060$31,810$6,250$0 1.1%
Office expenses $36,157$986$35,171$0 1.0%
Insurance $30,757$1,500$29,257$0 0.9%
Other (as described)Farm/Field Trips $26,557$26,557$0$0 0.8%
Fees: management $19,110$17,790$1,320$0 0.5%
Information technology $18,641$2,845$15,796$0 0.5%
All other expenses $16,882$0$16,882$0 0.5%
Conferences, conventions and meetings $11,694$10,699$995$0 0.3%
Fees: accounting $8,866$0$8,866$0 0.3%
Fees: legal $7,261$0$7,261$0 0.2%
Travel $4,259$4,259$0$0 0.1%
Other (as described)Graduation $2,762$2,762$0$0 0.1%
Advertising and promotion $2,373$1,173$1,200$0 0.1%
Total$3,476,541100%

View the filing

2022 · Form 990 · $3,027,220 spent · pay $2,491,556 · grants $0 · events $11,449
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $1,760,743$1,493,584$267,159$0 58.2%
Pension plan contributions $341,784$266,392$75,392$0 11.3%
Occupancy $234,837$12,130$222,707$0 7.8%
Other employee benefits $175,358$152,873$22,485$0 5.8%
Pay: officers, directors, trustees, key employees $138,165$69,083$69,082$0 4.6%
Other (as described)Universal Meals Program $90,653$86,325$4,328$0 3.0%
Payroll taxes $75,506$52,996$22,510$0 2.5%
Other (as described)Farm Program & Field Trips $36,651$36,651$0$0 1.2%
Fees: other services $32,411$28,551$3,860$0 1.1%
Information technology $31,472$24,044$7,428$0 1.0%
Other (as described)Classroom Materials & Extracurriculars $31,231$31,231$0$0 1.0%
Insurance $26,895$1,500$25,395$0 0.9%
Fees: accounting $11,859$0$11,859$0 0.4%
Conferences, conventions and meetings $11,449$10,814$635$0 0.4%
Office expenses $9,421$5,093$4,328$0 0.3%
Fees: legal $8,664$0$8,664$0 0.3%
Fees: management $4,210$1,610$2,600$0 0.1%
Advertising and promotion $3,499$2,096$1,403$0 0.1%
Other (as described)Graduation $2,412$2,412$0$0 0.1%
Total$3,027,220100%

View the filing

2021 · Form 990 · $2,610,456 spent · pay $2,182,930 · grants $0 · events $6,685
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $1,560,308$1,298,653$261,655$0 59.8%
Pension plan contributions $279,703$204,406$75,297$0 10.7%
Occupancy $190,251$145,393$44,858$0 7.3%
Other employee benefits $170,456$141,234$29,222$0 6.5%
Pay: officers, directors, trustees, key employees $107,625$53,813$53,812$0 4.1%
Office expenses $87,412$66,887$20,525$0 3.3%
Payroll taxes $64,838$42,228$22,610$0 2.5%
Fees: management $35,310$484$34,826$0 1.4%
Fees: other services $31,454$31,454$0$0 1.2%
Information technology $29,437$22,404$7,033$0 1.1%
Insurance $20,708$1,500$19,208$0 0.8%
Travel $8,752$8,752$0$0 0.3%
Fees: accounting $8,170$0$8,170$0 0.3%
Fees: legal $7,014$136$6,878$0 0.3%
Conferences, conventions and meetings $6,685$5,532$1,153$0 0.3%
Advertising and promotion $2,333$2,333$0$0 0.1%
Total$2,610,456100%

View the filing

2020 · Form 990 · $2,379,815 spent · pay $1,979,142 · grants $0 · events $3,760
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $1,521,001$1,243,434$277,567$0 63.9%
Pension plan contributions $249,009$196,394$52,615$0 10.5%
Occupancy $200,332$35,169$165,163$0 8.4%
Other employee benefits $152,519$123,693$28,826$0 6.4%
Payroll taxes $56,613$45,660$10,953$0 2.4%
Other (as described)Classroom Materials $38,050$38,050$0$0 1.6%
Fees: other services $33,668$18,799$14,869$0 1.4%
Information technology $28,058$22,306$5,752$0 1.2%
Insurance $24,211$0$24,211$0 1.0%
Other (as described)Lunch Program $16,862$16,862$0$0 0.7%
All other expenses $13,748$7,719$6,029$0 0.6%
Other (as described)Agriculture/Farm Program $12,176$12,176$0$0 0.5%
Fees: accounting $9,445$0$9,445$0 0.4%
Office expenses $7,958$2,164$5,794$0 0.3%
Fees: management $4,996$0$4,996$0 0.2%
Conferences, conventions and meetings $3,760$2,650$1,110$0 0.2%
Fees: legal $2,961$0$2,961$0 0.1%
Other (as described)Graduation $2,769$2,769$0$0 0.1%
Advertising and promotion $1,609$859$750$0 0.1%
Interest $70$0$70$0 0.0%
Total$2,379,815100%

View the filing