Education (B94) IRS Verified DX Registered 990 on File

MAMARONECK SCHOOLS FOUNDATION INC

EIN: 13-3882939 · LARCHMONT, NY 10538-0123 · United States · FY 2023 Data

3 out of 5 59 / 100 Based on 2+ years of filings

Financial strength (30%) 94/100

Reliability (20%) 55/100

Effectiveness (25%) 78/100

Impact (25%) No data yet

Financial data: FY 2023 · Scored 9/13/2026

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Financial Overview — FY 2023

$265K

Total Revenue

$147K

Total Expenses

$853K

Net Assets

Employees

Revenue Sources

Expense Breakdown

Program Expense Ratio 81.2%

Fundraising Efficiency 20.1%

Operating Reserve 69.63x

Liability-to-Asset 7.1%

Revenue Diversification 85.1%

Executive Compensation $0

Compared with Peers

FY 2023

Compared with 21,283 similar organizations (United States, Education, $100K–$1M in expenses), FY 2023.

This organization Middle half of peers (P25–P75) Peer median

Ratio	This org	Peer median	Position (P10 → P90)
Program expense ratio Program expenses / total expenses · higher is better	81.2%	88.7%	P10P90	Below median
Admin expense ratio Management and general / total expenses · lower is better	8.8%	8.8%	P10P90	Above median
Fundraising expense ratio Fundraising expenses / total expenses · lower is better	10.0%	0.0%	P10P90	Bottom quarter
Fundraising efficiency Fundraising expenses / gross fundraising income · lower is better	20.1%	1.9%	P10P90	Below median
Operating reserve Months of expenses covered by net assets · higher is better	69.6 mo	9.7 mo	P10P90	Top quarter
Liabilities to assets Total liabilities / total assets · lower is better	7.1%	0.5%	P10P90	Below median
Revenue concentration Share of revenue from the largest source · lower is better	85.1%	90.2%	P10P90	Above median
Revenue growth Year over year revenue growth	6.7%	8.6%	P10P90
Expense growth Year over year expense growth	-7.8%	13.1%	P10P90
Surplus margin Surplus as a share of revenue	44.6%	2.3%	P10P90

Financial History

Year	Revenue	Expenses	Net Assets	Program %	Staff
2023	$265K	$147K	$853K	81.2%	1
2022	$249K	$160K	$680K	84.1%	1
2021	$263K	$269K	N/A	—	1

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Organization Details

EIN: 13-3882939
State: NY
City: LARCHMONT
ZIP: 10538-0123
Classification: B94
Category: Education
Rating: 3★
Coverage: A
Last Updated: Aug 2026
IRS Ruling Year: 1996
Foundation Code: 15
Form 990: On File

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CharityAI™ rates charities from 0 to 100 using public filings (IRS Form 990 and the equivalent registries outside the US) together with the information the charity itself provides on DonationX. Ratings are recalculated every quarter, without human bias, and shown as stars.

Four pillars

Financial strength30%

Program expense ratio, fundraising efficiency, operating reserves, liabilities and revenue diversification, compared with similar organizations.

Reliability20%

Standing with the registry, filing history, verification and how complete the profile is.

Effectiveness25%

How much goes to programs and how consistently the organization delivers them.

Impact25%

The outcomes the charity reports on DonationX: people served, cost per service and results.

Stars

★★★★★ 80–100 ★★★★☆ 60–79 ★★★☆☆ 40–59 ★★☆☆☆ 20–39 ★☆☆☆☆ 1–19

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The coverage grade (A to D) says how much filing data the score rests on; NONE means there is not enough to rate.
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