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Mary Institute and St Louis Country Day School

EIN 43-0653366St Louis, MOEducationLatest 990 FY2025

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Listed with the IRS. Every screen came back clear.

A 501(c)(3) on Publication 78 and the IRS master file.

A paid feature, included from the $75 plan up. Sign in to download.Checked Oct 15, 2026, 2:18 PM ET
IRS listing
Listed
Revocation
None
IRS files
Agree
Sanctions
No match
IRS bulletin
No notice
California
No record
Charity type
509(a)(1)

$79Mrevenue
FY2025 · +83% in 3 yrs
562staff
8 of 8years filed
’18’19’20’21’22’23’24’25
Revenue and spendingRevenueSpendingDeficit
$0$20M$40M$60M$80M’18’19’20’21’22’23’24’25
Against similar nonprofits FY2025
Operating margin33.2%
Months of reserve8.5mo
Revenue growth (annualized)+8.0%
Middle half of peersMedianMary Institute and St Louis Country Day School
Where the money goes FY2025 · $53M spent
Programs$43M82%Management and general$8.0M15%Fundraising$1.3M3%990 FY2025 · Part IX line 25