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Nonprofit · EIN 06-0646786

MISS PORTERS SCHOOL INC

Tax-exempt · FARMINGTON, CT 06032

Financials

$44.5M$35.1M2022$43.2M$36.6M2023$53.1M$38.1M2024
Revenue Expenses · by fiscal year end
Financials of MISS PORTERS SCHOOL INC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2025990$53,059,482$38,054,112$15,005,370$254,075,762$29,485,177$224,590,585
June 30, 2024990$43,184,296$36,552,029$6,632,267$235,916,301$28,924,265$206,992,036
June 30, 2023990$44,475,560$35,131,841$9,343,719$220,472,328$30,942,453$189,529,875
Financial details: 990 for the year ended June 30, 2025

Revenue

Contributions, gifts and grants
$14,559,637
Program service revenue
$23,337,378
Investment income
$14,439,743
Net rental income
$287,805
Net gain from sales of assets
$11,499,798
Net income from sales of inventory
$6,796
Other revenue
$722,724

Expenses

Grants and similar amounts paid
$5,339,721
Compensation of officers, directors and key employees
$2,351,004
Other salaries and wages
$10,426,007
Salaries, compensation and benefits (total)
$17,421,764
Professional fundraising fees
$0
Legal fees
$55,821
Accounting fees
$83,362
Occupancy
$1,579,717
Travel
$983,492
Depreciation
$4,002,648
Program services (functional)
$27,388,942
Management and general (functional)
$6,782,278
Fundraising (functional)
$3,882,892

Balance sheet and other

Total assets, start of year
$235,916,301
Total assets, end of year
$254,075,762
Total liabilities, end of year
$29,485,177
Net assets, end of year
$224,590,585
Land, buildings and equipment
$55,035,078
Publicly traded securities
$76,055,717
Net assets without donor restrictions
$66,559,392
Net assets with donor restrictions
$158,031,193
Gross unrelated business income
$240,246
Gross receipts
$85,282,813
Employees
273
Volunteers
357
Year formed
1943
State of legal domicile
CT

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended June 30, 2025, highest compensation first.

NameTitleHours / weekCompensationOther / benefits
KATHERINE G WINDSORHEAD OF SCHOOL
Trustee or director, Officer
40$998,109$306,024
MICHAEL BERGINCFO, COO
Officer
40$438,889$137,876
CHRISTINE PINACHIEF ADVANCEMENT OFFICER
Key employee
40$401,419$108,905
ELIZABETH SCHMITTCHIEF ENROLLMENT & STUDENT AFFAIRS O
Highest-paid employee
40$200,950$89,174
TIMOTHY QUINNCHIEF ACADEMIC OFFICER AND DEAN OF
Highest-paid employee
40$182,783$84,548
DIANE JOHNSON GRANTCHIEF COMMUNICATIONS & PUBLIC HEALTH
Highest-paid employee
40$163,757$63,931
LISA GILMORECONTROLLER
Highest-paid employee
40$168,718$32,966
CHRISTINA DIEGUEZ-KUODIRECTOR OF DEVELOPMENT
Highest-paid employee
40$166,320$30,349
SARAH KLISH LIUCHAIR OF THE BOARD
Trustee or director, Officer
5$0$0
ELIZABETH DENNY ONEGLIAVICE CHAIR OF THE BOARD
Trustee or director, Officer
5$0$0
LISA KUNSTADTERSECRETARY
Trustee or director, Officer
5$0$0
CAMERON LANPHIERTREASURER
Trustee or director, Officer
5$0$0
CLAIRE THEOBALDINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
CHARLOTTE BERRYINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
MISHONE DONELSONINDIVIDUAL TRUSTEE
Trustee or director
2$0$0
14 more people on this return
NameTitleHours / weekCompensation
CLOVER DRINKWATERINDIVIDUAL TRUSTEE
Trustee or director
2$0
SHARIFAH HOLDERINDIVIDUAL TRUSTEE
Trustee or director
2$0
MAUREEN HUNTERINDIVIDUAL TRUSTEE
Trustee or director
3$0
MAURA REILLY KENNEDYINDIVIDUAL TRUSTEE
Trustee or director
2$0
MIMI COLGATE KIRKINDIVIDUAL TRUSTEE
Trustee or director
1$0
MAY LEEINDIVIDUAL TRUSTEE
Trustee or director
1$0
MAURA MCQUADEINDIVIDUAL TRUSTEE
Trustee or director
1$0
PAULINA MEJIAINDIVIDUAL TRUSTEE
Trustee or director
1$0
ANA G MENDEZINDIVIDUAL TRUSTEE
Trustee or director
1$0
PAT MUELLERINDIVIDUAL TRUSTEE
Trustee or director
1$0
MARTHA POMERANTZINDIVIDUAL TRUSTEE
Trustee or director
3$0
MATTHEW SHARPINDIVIDUAL TRUSTEE
Trustee or director
1$0
DOMINIQUE CASIMIR STEVENSINDIVIDUAL TRUSTEE
Trustee or director
2$0
JANET MACOMBER WILLIAMSONINDIVIDUAL TRUSTEE
Trustee or director
3$0
990 for the year ended June 30, 2024: 29 people
NameTitleHours / weekCompensationOther / benefits
KATHERINE G WINDSORHEAD OF SCHOOL
Trustee or director, Officer
40$963,456$218,447
MICHAEL BERGINCFO, COO
Officer
40$424,361$133,221
CHRISTINE PINACHIEF ADVANCEMENT OFFICER
Key employee
40$388,738$95,322
ELIZABETH SCHMITTCHIEF ENROLLMENT & STUDENT AFFAIRS O
Highest-paid employee
40$194,467$100,289
TIMOTHY QUINNCHIEF ACADEMIC OFFICER AND DEAN OF F
Highest-paid employee
40$154,555$87,692
DIANE JOHNSONCHIEF COMMUNICATIONS & PUBLIC HEALTH
Highest-paid employee
40$157,263$48,703
LISA GILMORECONTROLLER
Highest-paid employee
40$162,201$31,449
CHRISTINA DIEGUEZ-KUOCAMPAIGN DIRECTOR
Highest-paid employee
40$160,316$30,154
SARAH KLISH LIUCHAIR OF THE BOARD
Trustee or director
5$0$0
ELIZABETH DENNY ONEGLIAVICE CHAIR OF THE BOARD
Trustee or director
5$0$0
AMANI REEDSECRETARY
Trustee or director
5$0$0
CLAIRE THEOBALDTREASURER
Trustee or director
5$0$0
MAURA CLINEINDIVIDUAL TRUSTEE
Trustee or director
2$0$0
CHRISSY COXINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
MISHONE DONELSONINDIVIDUAL TRUSTEE
Trustee or director
3$0$0
CLOVER DRINKWATERINDIVIDUAL TRUSTEE
Trustee or director
2$0$0
ALTHEA BEATON DUCARDINDIVIDUAL TRUSTEE
Trustee or director
3$0$0
SHARIFAH HOLDERINDIVIDUAL TRUSTEE
Trustee or director
2$0$0
MAUREEN HUNTERINDIVIDUAL TRUSTEE
Trustee or director
2$0$0
MAURA REILLY KENNEDYINDIVIDUAL TRUSTEE
Trustee or director
2$0$0
MIMI COLGATE KIRKINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
LISA KUNSTADTERINDIVIDUAL TRUSTEE
Trustee or director
3$0$0
CAMERON LANPHIERINDIVIDUAL TRUSTEE
Trustee or director
2$0$0
MAY LEEINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
ANA G MENDEZINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
PAT MUELLERINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
MARTHA POMERANTZINDIVIDUAL TRUSTEE
Trustee or director
3$0$0
DOMINIQUE CASIMIR STEVENSINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
JANET MACOMBER WILLIAMSONINDIVIDUAL TRUSTEE
Trustee or director
3$0$0
990 for the year ended June 30, 2023: 30 people
NameTitleHours / weekCompensationOther / benefits
KATHERINE G WINDSORHEAD OF SCHOOL
Trustee or director, Officer
40$1,052,507$132,215
MICHAEL BERGINCFO, COO
Officer
40$388,955$107,758
CHRISTINE PINACHIEF ADVANCEMENT OFFICER
Key employee
40$355,098$70,569
ELIZABETH SCHMITTCHIEF ENROLLMENT & STUDENT AFFAIRS OFFICER
Highest-paid employee
40$181,967$95,729
TIMOTHY QUINNCHIEF ACADEMIC OFFICER AND DEAN OF FACULTY
Highest-paid employee
40$158,161$85,191
DIANE JOHNSONCHIEF COMMUNICATIONS & PUBLIC HEALTH OFFICER
Highest-paid employee
40$151,367$46,635
RICH HIGLEYDIRECTOR OF FACILITY SERVICES
Highest-paid employee
40$143,106$43,506
CHRISTINA DIEGUEZ-KUOCAMPAIGN DIRECTOR
Highest-paid employee
40$155,704$16,039
NANCY SIMPKINSCHAIR OF THE BOARD
Trustee or director
5$0$0
SARAH KLISH LIUVICE CHAIR OF THE BOARD
Trustee or director
5$0$0
AMANI REEDSECRETARY
Trustee or director
5$0$0
CLAIRE THEOBALDTREASURER
Trustee or director
5$0$0
ROBIN DIAMONTEINDIVIDUAL TRUSTEE
Trustee or director
2$0$0
MISHONE DONELSONINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
CLOVER DRINKWATERINDIVIDUAL TRUSTEE
Trustee or director
2$0$0
ALTHEA BEATON DUCARDINDIVIDUAL TRUSTEE
Trustee or director
3$0$0
ELIZABETH GORMANINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
DIANA HOBSONINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
SHARIFAH HOLDERINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
MAUREEN HUNTERINDIVIDUAL TRUSTEE
Trustee or director
2$0$0
ALISON KEATINGINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
LISA KUNSTADTERINDIVIDUAL TRUSTEE
Trustee or director
3$0$0
CAMERON LANPHIERINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
MAY LEEINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
ANNIE MENDEZINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
ELIZABETH DENNY ONEGLIAINDIVIDUAL TRUSTEE
Trustee or director
3$0$0
MARTHA POMERANTZINDIVIDUAL TRUSTEE
Trustee or director
3$0$0
TIA SILASINDIVIDUAL TRUSTEE
Trustee or director
1$0$0
LISA COLFAX TOWNSONINDIVIDUAL TRUSTEE
Trustee or director
3$0$0
JANET MACOMBER WILLIAMSONINDIVIDUAL TRUSTEE
Trustee or director
2$0$0

Address and contacts

Address (IRS master file)
60 MAIN ST, FARMINGTON, CT 06032-2232
Principal officer (990 for 2024)
KATHERINE G WINDSOR, 60 MAIN STREET, FARMINGTON, CT 060322232
Signed the 990
MICHAEL J BERGIN, CFO/COO
Phone
(860) 409-3500
Return prepared by
CLIFTONLARSONALLEN

Mission

MISS PORTER'S SCHOOL EDUCATES YOUNG WOMEN TO BECOME INFORMED, BOLD, RESOURCEFUL AND ETHICAL GLOBAL CITIZENS. WE EXPECT OUR GRADUATES TO SHAPE A CHANGING WORLD.

990 for the year ended June 30, 2025

Program accomplishments

  • INDEPENDENT SECONDARY SCHOOL WITH 213 BOARDING AND 122 DAY STUDENTS; 299 AUXILIARY PROGRAMS PARTICIPANTS.
    Expenses $27,388,942 · grants $5,339,721 · revenue $23,379,836

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026Not due yet
2024June 30, 2025November 17, 2025990 on file
2023June 30, 2024November 15, 2024990 on file

IRS record

EIN
06-0646786
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
School
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1943
Accounting year ends
June
Files
Form 990 or 990-EZ
Category (NTEE)
Education (B250)
Assets (IRS master file)
$254,075,762
Income (IRS master file)
$85,282,813

Filing history

FormYear endedRevenueExpensesAssetsReturn
990June 2025$53,059,482$38,054,112$254,075,762IRS
990-TJune 2025–––IRS
990June 2024$43,184,296$36,552,029$235,916,301XML
990-TJune 2024–––IRS
990June 2023$44,475,560$35,131,841$220,472,328XML
990-TJune 2023–––IRS
990June 2022$43,634,865$32,812,324$215,294,054IRS
990-TJune 2022–––IRS
990June 2021–––IRS
990-TJune 2021–––IRS
990June 2020–––IRS
990June 2019–––IRS
990June 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 06-0646786).

Questions about MISS PORTERS SCHOOL INC

What is the EIN of MISS PORTERS SCHOOL INC?
The employer identification number (EIN) of MISS PORTERS SCHOOL INC is 06-0646786.
Is MISS PORTERS SCHOOL INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1943.
Are donations to MISS PORTERS SCHOOL INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does MISS PORTERS SCHOOL INC file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of MISS PORTERS SCHOOL INC due?
The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MISS PORTERS SCHOOL INC last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended June 2025.
Who is the principal officer of MISS PORTERS SCHOOL INC?
The 990 for the year ended June 30, 2025 names KATHERINE G WINDSOR.
Who are the officers and directors of MISS PORTERS SCHOOL INC?
The 990 for the year ended June 30, 2025 lists 29 people; 8 received compensation from the organization, the highest $998,109 (KATHERINE G WINDSOR, HEAD OF SCHOOL).
How much revenue does MISS PORTERS SCHOOL INC have?
On its 990 for the year ended June 30, 2025 it reported revenue of $53,059,482, expenses of $38,054,112 and total assets of $254,075,762 at year end.

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