| Structural Engineers FoundationChicago | Form 990 | $43,236FY2025 |
| Alpha Mu GammaEvanston | Form 990-N | No figure |
| Alliance for Just Money IncBloomington | Form 990-N | No figure |
| LHS Parents Cats IncLibertyville | Form 990-EZ | $43,127FY2026 |
| Falak Education Society IncNaperville | Form 990-N | No figure |
| Bike Project of Urbana-ChampaignUrbana | Form 990-EZ | $42,972FY2024 |
| Illinois Congress of Parents TeachersElmhurst | Form 990-EZ | $42,942FY2025 |
| Aka-Lade FoundationWestchester | Form 990-EZ | $42,638FY2025 |
| Grace McWayne Parent Teacher Organization of Batavia IllinoisBatavia | Form 990-N | No figure |
| Illinois Congress of Parents TeachersWinfield | Form 990-EZ | $42,483FY2025 |
| Warren J Kaforski Trade School Scholarship IncSerena | Form 990-N | No figure |
| Friends of Suder Elementary SchoolChicago | Form 990-EZ | $42,251FY2024 |
| Heart of Illinois Ceo ProgramToluca | Form 990-N | No figure |
| Society of Anesthesia and Sleep MedicineLisle | Form 990-N | No figure |
| District 200 Education FoundationWoodstock | Form 990-EZ | $41,561FY2024 |
| Beecher PTOBeecher | Form 990-EZ | $41,534FY2025 |
| William J Butler School PTOLockport | Form 990-EZ | $41,515FY2023 |
| International Special Education Services IncChicago | Form 990-N | No figure |
| Illinois Congress of Parents TeachersGlenview | Form 990-N | No figure |
| Future Leaders of Americafoundation IncChicago | Form 990-N | No figure |
| Barrett Bear Callaghan Win It FoundationOrland Park | Form 990-N | No figure |
| Willowbrook PTOGlenview | Form 990-EZ | $40,927FY2025 |
| Wild Rose Elementary School PTOSaint Charles | Form 990-EZ | $40,879FY2026 |
| Friends of Moos Elementary SchoolChicago | Form 990-N | No figure |
| Threads Hope and Love NFPWashington | Form 990-N | No figure |
| Educate Radiate ElevateChicago | Form 990-N | No figure |
| Pekin Community High School Choral Parents OrganizationPekin | Form 990-EZ | $40,352FY2024 |
| Friends of SchurzChicago | Form 990-N | No figure |
| Northbrook Junior High Parent Teacher OrganizationNorthbrook | Form 990-N | No figure |
| International Family Therapy Association IncRock Island | Form 990-N | No figure |
| Kendall County Farm Bureau FoundationMorris | Form 990 | $40,092FY2025 |
| Mid Central Illinois Regional Council of Carpenters ScholarshipSpringfield | Form 990-EZ | $39,899FY2025 |
| Taft Football Family Booster Club LtdChicago | Form 990-EZ | $39,848FY2025 |
| Park View Parent-Teacher ClubGlen Ellyn | Form 990-EZ | $39,836FY2025 |
| Highland Family AssociationLibertyville | Form 990-EZ | $39,557FY2025 |
| Huntley High School Band BoostersHuntley | Form 990-N | No figure |
| River Bend Athletic BoostersFulton | Form 990-N | No figure |
| Maple School PTONorthbrook | Form 990-N | No figure |
| Ipc Education FoundationBannockburn | Form 990-N | No figure |
| District 39 Educational FoundationWilmette | Form 990-N | No figure |
| Parent Booster USA IncOswego | Form 990-EZ | $38,768FY2025 |
| Lincoln-Douglas PTOQuincy | Form 990-EZ | $38,754FY2026 |
| Cho FoundationGlenview | Form 990-N | No figure |
| Farmingdale Elementary Parent Teacher ClubPleasant Plains | Form 990-N | No figure |
| Illinois Congress of Parents TeachersPlainfield | Form 990-EZ | $38,581FY2026 |
| Rome Grade School FoundationMount Vernon | Form 990-EZ | $38,553FY2024 |
| Gilberts Elementary PTO IncGilberts | Form 990-EZ | $38,339FY2025 |
| Chicago West Suburban Unico IncPark Ridge | Form 990-EZ | $38,239FY2025 |
| Masjid E RahmatChicago | Form 990-N | No figure |
| White County CeoCarmi | Form 990-N | No figure |