We partner with independent schools to advance their diverse approaches to education, primarily through programs for high school-aged students.

501(c)(3) charity; gifts are tax-deductible.
77¢ of each $1 spent went to programs.
$519K paid to officers and key staff.
Mission: Form 990 Part I, line 1 · Status: IRS Pub. 78 · Programs: Part IX · Pay: Part VII

Before you give

FY2021 · Form 990Independent: from IRS data, not the org
Download 990
IRS status
501(c)(3)
not on the IRS revocation list
Looks good: listed by the IRS and not on the revocation list.
IRS BMF · Auto-Revocation List
Tax-deductible gifts
Yes
Donations are tax-deductible
Looks good: the IRS lists gifts to it as deductible.
IRS Pub. 78 · IRS BMF
Latest return
FY2025
latest Form 990
Looks good: the latest return is for FY2025, 1 tax year back; within 2 tax years.
IRS e-file · Filing history
Surplus or deficit
5 of 6
filings with a surplus
Average surplus $313K a year · 8% of revenue · last 6 filings
Fine: a surplus in 5 of the last 6 filings.
Pt I · Ln 19 · 6 filings
Spent on programs
77%
of spending
Looks good: 77% of spending went to programs; 75% or more.
Pt IX · Ln 25 · col B
Pay to officers and key staff
$519K
to officers and key staff · 17% of spending
Fine: pay to officers and key staff is 17% of spending; 15% to 20%.
Pt VII · Sec A
5 mo
of spending, in cash
Plus $2.2M in investments, Pt X · Ln 11–13
Looks good: 4.9 months of spending in cash; 3 or more.
Pt X · Ln 1–2 · Pt I · Ln 18
Liabilities
$685K
20% of total assets
Looks good: liabilities are 20% of assets; 50% or less.
Pt X · Ln 26
Independent board members
12
of 12 voting members
Looks good: 12 of 12 voting members are independent, a majority.
Pt VI · Ln 1a–1b
Looks goodFineWorth a lookConcernNo data yetTap a box for the reason.
Revenue
$3.2M
-19% vs prior year
Spent
$3.0M
To programs
77%
Net assets
$2.7M
By yearFY2020–FY2025
Revenue
$3.2M
FY2021▼ -19%
Tap a bar for its year
Revenue by fiscal year
FY2020$4.0M
FY2021$3.2M
FY2022$3.0M
FY2023$4.3M
FY2024$4.2M
FY2025$4.2M
Expenses
$3.0M
FY2021▲ +31%
Tap a bar for its year
Expenses by fiscal year
FY2020$2.3M
FY2021$3.0M
FY2022$3.6M
FY2023$3.9M
FY2024$4.2M
FY2025$4.1M
Net assets
$2.7M
FY2021▲ +17%
Tap a bar for its year
Net assets by fiscal year
FY2020$2.4M
FY2021$2.7M
FY2022$2.2M
FY2023$2.6M
FY2024$3.3M
FY2025$3.6M

From the FY2021 Form 990 (year ending August 2021) · figures checked against the IRS filing · see the original

Give Claim
You’re viewing the FY2021 filing — not the latest on file. See the latest (FY2025) →

Is it real?

Yes. Never revoked by the IRS. Latest filing on record: FY2025. IRS ruling in Mar 2010.

IRS Pub. 78 · IRS Auto-Revocation List · IRS Business Master File

Where the money goes

77 cents of each dollar spent went to programs.

Program services 77% · $2.3M Management & general 23% · $688K

Form 990 Part IX, line 25, columns B–D. Every line is in By the numbers.

Something off? Claim to add context

Who runs it and what they're paid

15 people listed on the 990; $519K paid to officers and key staff.

Part VII, Section A · reportable compensation · most recent filed roster (FY2020); the FY2021 filing did not itemize Part VII
Ex-Officio, Head of School
$287,500Pt VII · Sec A
Assistant Head of School
$124,217Pt VII · Sec A
Assistant Head of School
$106,819Pt VII · Sec A
$0Pt VII · Sec A
$0Pt VII · Sec A
$0Pt VII · Sec A
Trustee
$0Pt VII · Sec A
$0Pt VII · Sec A

Brad Rathgeber’s $436K as President & CEO is at the 99th percentile of top reported officer pay among 3394 $1–10M education nonprofits. Peer set: organizations in the same NTEE major field of work and revenue-size band, compared on each org’s own highest-paid officer/key-employee, from Form 990 Part VII / 990-PF Part VIII. Descriptive placement, not a verdict on whether the pay is appropriate.

Compensation history total reportable pay by year · 8 named individuals · Part VII

NameFY2025FY2024FY2023FY2022FY2021FY2020
Brad Rathgeber$436,131$394,370$302,820—$287,500$266,000
Brad Rathberger———$287,000——
Erin Rehel$176,600$106,225————
Sarah Hanawald$139,674$133,064$125,651———
Corinne Dedini——$137,149—$124,217—
Sarah Wike$131,391—————
Curt Brossman$124,861$103,559————
Elizabeth Katz—$118,870$112,260—$106,819—

Total reportable compensation (Form 990 Part VII column D / Schedule J column E) by filing year, matched by name within this organization. The Schedule J base / bonus / deferred breakdown is not parsed into this dataset.

See One Schoolhouse INC executive salaries →

On this list? Claim this org

Something off? Claim to add context

Questions the 990 asks

The form asks each of these directly. These are the filed answers.

  • Family or business ties among officersPt VI · Ln 2No
  • Top official's pay set by an independent reviewPt VI · Ln 15aYes

Programs and updates

Empowers K-12 learning and transforms education through online programs.

Questions for One Schoolhouse INC

Tap to ask. One Schoolhouse INC sees how many people are interested.

Your first name shows with your question. One Schoolhouse INC answers here, for everyone.

Provided by the organization

Know this org? Add your story

1 program · $2.3M · in their own filed words · FY2020
01

Student and professional development courses taught.

$2.3Mprogram expense

By the numbers

The FY2021 990, line by line.

1The main four
Money inPt VIII
$3.2M
Ln 12
Fees for servicesLn 2g$3.2M
Gifts and grantsLn 1h$1K
Other incomeLn 4–11$916
Money outPt IX
$3.0M
Ln 25
Programscol B$2.3M
Managementcol C$688K
Owns and owesPt X
$2.7M
net assets · Ln 32
Cash and savingsLn 1–2$1.2M
Total assetsLn 16$3.4M
LiabilitiesLn 26$685K
PeoplePt VI, VII
15
listed · VII A
PaidVII A3
Voting boardVI 1a12
IndependentVI 1b12
2In more detail
Revenue in detailPt VIII
Gifts and grantsLn 1h$1K
Fees for servicesLn 2g$3.2M
Investment incomeLn 3$488
Other incomeLn 4–11$916
Total revenueLn 12$3.2M
Assets in detailPt X, end of year
CashLn 1$1.2M
SavingsLn 2$11K
Cash and savings togetherLn 1–2$1.2M
InvestmentsLn 11–13$2.2M
Land, buildings, equipmentLn 10c$0
Total assetsLn 16$3.4M
LiabilitiesLn 26$685K
Net assetsLn 32$2.7M
OperationsPt I, VI
EmployeesI 5108
VolunteersI 60
Fiscal year endsHeaderAugust
Conflict-of-interest policyVI 12aYes
Whistleblower policyVI 13Yes
Records policyVI 14Yes
3Year over year
Balance sheet, start vs end of yearPt X · col A, B
LineStart FY21End FY21
Cash and savingsLn 1–2$3.0M$1.2M
InvestmentsLn 11–13$2.2M
Land, buildings, equipmentLn 10c$0$0
Total assetsLn 16$3.1M$3.4M
LiabilitiesLn 26$753K$685K
Net assetsLn 32$2.4M$2.7M
4Every line
Statement of functional expensesPt IX · every line
LineTotalProgramsManagementFundraising
Pay of current officers, directors and key staffLn 5$311K$155K$155K
Other salaries and wagesLn 7$1.9M$1.7M$235K
Pension plan contributionsLn 8$63K$31K$31K
Other employee benefitsLn 9$118K$94K$23K
Payroll taxesLn 10$91K$66K$25K
Legal feesLn 11b$16K$16K
Accounting feesLn 11c$17K$17K
Other fees for servicesLn 11g$60K$53K$7K
Advertising and promotionLn 12$21K$21K
Office expensesLn 13$43K$15K$28K
Information technologyLn 14$100K$65K$34K
OccupancyLn 16$26K$26K
TravelLn 17$16K$4K$12K
InsuranceLn 23$46K$46K
Other expenses (24a–d)Ln 24$191K$183K$8K
All other expensesLn 24e$820$820
Total functional expensesLn 25$3.0M$2.3M$688K$0

Filing history

YearMoney inMoney outIn minus outNet assetsDownload
FY2025 Latest $4.2M$4.1M$35K$3.6M 990 PDF
FY2024 $4.2M$4.2M$28K$3.3M 990 PDF
FY2023 $4.3M$3.9M$424K$2.6M 990 PDF
FY2022 $3.0M$3.6M−$536K$2.2M 990 PDF
FY2021 Viewing $3.2M$3.0M$237K$2.7M 990 PDF
FY2020 $4.0M$2.3M$1.7M$2.4M 990 PDF

More to add? Claim this org

Schedules filed Part IV

III · Programs R · Related orgs G · Fundraising L · Interested persons I · Grants A · Public support J · Pay O · Explanations
See the full FY2021 990 (6 parts)
Part I · Summary $3,243,553 revenue, 12 lines filed
I-8 Contributions and grantsPrior year $0$1,000
I-9 Program service revenuePrior year $3,979,288$3,241,149
I-10 Investment incomePrior year $1,576$488
I-11 Other revenuePrior year $3,372$916
I-12 Total revenuePrior year $3,984,236$3,243,553
I-13 Grants and similar amounts paidPrior year $0$0
I-14 Benefits paid to membersPrior year $0$0
I-15 Salaries and benefitsPrior year $1,809,374$2,469,655
I-16a Professional fundraising feesPrior year $0$0
I-17 Other expensesPrior year $487,203$536,922
I-18 Total expensesPrior year $2,296,577$3,006,577
I-19 Revenue less expensesPrior year $1,687,659$236,976
Part VI · Governance 12 of 12 board members independent, no flags
VI-1a Voting members of the governing body12
VI-1b Independent voting members12
VI-2 Family or business relationship among officers or directorsNo
VI-12a Written conflict of interest policyYes
VI-13 Written whistleblower policyYes
VI-14 Document retention and destruction policyYes
VI-15a Process for setting top official's payYes
Part VIII · Statement of revenue $3,243,553 across 6 lines filed
VIII-1f All other contributions, gifts and grants$1,000
VIII-1h Total contributions, gifts and grants$1,000
VIII-2a-f Program service revenue, itemized rows (sum of 2a–2f as filed)Related to mission $3,241,149$3,241,149
VIII-3 Investment incomeExcluded from tax $488$488
VIII-11a-d Other revenue, itemized rows (sum of 11a–11d as filed)Excluded from tax $916$916
VIII-12 Total revenueRelated to mission $3,241,149 · Unrelated business $0 · Excluded from tax $1,404$3,243,553
Part IX · Statement of functional expenses $3,006,577 across 16 lines filed
IX-5 Pay of current officers, directors and key staffPrograms $155,397 · Management $155,397$310,794
IX-7 Other salaries and wagesPrograms $1,652,214 · Management $235,206$1,887,420
IX-8 Pension plan contributionsPrograms $31,476 · Management $31,476$62,952
IX-9 Other employee benefitsPrograms $94,419 · Management $23,146$117,565
IX-10 Payroll taxesPrograms $65,832 · Management $25,092$90,924
IX-11b Legal feesManagement $16,225$16,225
IX-11c Accounting feesManagement $17,050$17,050
IX-11g Other fees for servicesPrograms $52,515 · Management $7,270$59,785
IX-12 Advertising and promotionManagement $21,194$21,194
IX-13 Office expensesPrograms $14,877 · Management $27,880$42,757
IX-14 Information technologyPrograms $65,160 · Management $34,491$99,651
IX-16 OccupancyManagement $26,303$26,303
IX-17 TravelPrograms $3,587 · Management $12,176$15,763
IX-23 InsuranceManagement $46,422$46,422
IX-24 Other expenses (24a–d)Programs $183,416 · Management $7,536$190,952
IX-24e All other expensesManagement $820$820
IX-25 Total functional expensesPrograms $2,318,893 · Management $687,684 · Fundraising $0$3,006,577
Part X · Balance sheet $3,431,581 assets, 13 lines filed
X-1 Cash, non-interest-bearingStart of year $2,832,770$1,220,085
X-2 Savings and temporary cash investmentsStart of year $199,430$10,769
X-4 Accounts receivableStart of year $44,746$14,875
X-9 Prepaid expenses and deferred chargesStart of year $33,097$31,357
X-10c Land, buildings and equipment, netStart of year $0$0
X-12 Other securities$2,154,495
X-16 Total assetsStart of year $3,110,043$3,431,581
X-17 Accounts payable and accrued expensesStart of year $27,498$21,664
X-19 Deferred revenueStart of year $725,485$663,776
X-26 Total liabilitiesStart of year $752,983$685,440
X-27 Net assets without donor restrictionsStart of year $2,357,060$2,746,141
X-32 Total net assets or fund balancesStart of year $2,357,060$2,746,141
X-33 Total liabilities and net assetsStart of year $3,110,043$3,431,581
Part XI · Reconciliation of net assets $2,746,141 net assets at year end
XI-1 Total revenue$3,243,553
XI-2 Total expenses$3,006,577
XI-3 Revenue less expenses$236,976
XI-4 Net assets at start of year$2,357,060
XI-5 Net unrealized gains (losses) on investments$152,200
XI-8 Prior period adjustments−$95
XI-9 Other changes in net assets$0
XI-10 Net assets at end of year$2,746,141

Form 990 e-file (XML) FY2021 from the IRS · Classification, formation year and address from the IRS Business Master File

Similar organizations you could support · Compare with another nonprofit

Names, privacy, and removal requests More

The names, titles, and compensation shown on this page are reproduced from IRS Form 990 filings, which are public records.

Philanthropy.org does not alter the content of those filings. All information appears exactly as reported by the filing organization for the tax year shown.

We publish only information contained in the public IRS filing — and less than the filing contains. Our profile pages do not display street addresses, telephone numbers, personal email addresses, or other personal contact information, even where the filing includes them.

Many people share the same name. A name shown on this page reflects only what one organization reported in one IRS filing for one tax year. It should not be interpreted as identifying any other individual with the same or a similar name.

If you are no longer affiliated with the organization, your name will generally stop appearing in future IRS filings once the organization no longer reports you. Pages for tax years in which you were reported remain published because those filings remain part of the public record.

Philanthropy.org does not alter or remove IRS filing records. Removing a page from this website would not remove the underlying IRS filing, which remains publicly available from the IRS and other publishers of the same information.

If you believe the IRS filing itself is inaccurate, corrections must be made by the filing organization or the IRS directly.

Your org? Add context

Made it to the end? Claim this org

All figures are derived from public IRS Form 990 filings and are presented without evaluation of any organization. philanthropy.org does not rate, score, or rank organizations, including the pay comparisons above.