| West Carroll Educational Foundation IncSavanna | Form 990-N | No figure |
| Rock Island-Milan Boosters ClubRock Island | Form 990-EZ | $32,920FY2025 |
| Supporters of South NFPCrystal Lake | Form 990-N | No figure |
| Society of American Military Engineers Lake Michigan PostChicago | Form 990-N | No figure |
| Healthcare Information & Management Systems Society FoundationChicago | Form 990 | $32,837FY2022 |
| Lundahl Parent Teacher OrganizationCrystal Lake | Form 990-N | No figure |
| Sango AssociationNaperville | Form 990-N | No figure |
| Association of University Radiologists Res and Ed FoundationWarrenville | Form 990-N | No figure |
| Alula Dream FoundationWheaton | Form 990-N | No figure |
| Richmond Grade School Parent Teacher Organization IncorporatedRichmond | Form 990-EZ | $32,603FY2025 |
| Tony Laughlin Memorial Fund Inc NFPArlington Heights | Form 990-EZ | $32,414FY2025 |
| Oswego Foundation for Educational ExcellenceOswego | Form 990-N | No figure |
| Joliet Township Athletic Booster ClubJoliet | Form 990-EZ | $32,108FY2026 |
| Alice Gustafson School Parent-Teacher OrganizationBatavia | Form 990-N | No figure |
| Ux for Good IncDowners Grove | Form 990-N | No figure |
| Bullfish NFPHarrisburg | Form 990-N | No figure |
| John a Bannes P T OTinley Park | Form 990-EZ | $31,815FY2025 |
| Peoria County Farm Bureau FoundationPeoria | Form 990-N | No figure |
| District 90 PTD PresidentsO'Fallon | Form 990-EZ | $31,716FY2024 |
| Royalteer Productions NFPKewanee | Form 990-N | No figure |
| Ridge Elementary Ptoi Llinois Con- GressPlainfield | Form 990-EZ | $31,661FY2025 |
| Think Freely Media IncChicago | Form 990-N | No figure |
| West Parent OrganizationCrystal Lake | Form 990-EZ | $31,193FY2026 |
| Indian Creek Education Foundation IncShabbona | Form 990-N | No figure |
| Peotone PTOFrankfort | Form 990-EZ | $30,928FY2025 |
| East Maine School District 63 FoundationDes Plaines | Form 990-N | No figure |
| Centennial High School Baseball Booster ClubChampaign | Form 990-N | No figure |
| Iqra Orphanage Education FoundationSpringfield | Form 990-N | No figure |
| Lisle High School Booster ClubLisle | Form 990-N | No figure |
| Mannheim Educational FoundationFranklin Park | Form 990-EZ | $29,896FY2025 |
| Rochelle Elementary School District 231 PTORochelle | Form 990-EZ | $29,776FY2025 |
| Heritage Community 8 PTCHomer | Form 990-N | No figure |
| Illinois Congress of Parents TeachersAurora | Form 990-N | No figure |
| Gary D Wright PTO IncHampshire | Form 990-EZ | $29,396FY2026 |
| Christopher Quon Memorial FoundationLake Forest | Form 990-N | No figure |
| Black and Gold InitiativeChampaign | Form 990-EZ | $29,382FY2025 |
| Association of South Asian Real Estate ProfessionalsDes Plaines | Form 990-N | No figure |
| Reach for the Stars NFPChicago | Form 990-EZ | $29,279FY2025 |
| Kankakee County 4-H Youth FoundationChebanse | Form 990-EZ | $29,271FY2025 |
| St Elmo Educational FoundationSaint Elmo | Form 990-N | No figure |
| Fabyan Elementary School PTOGeneva | Form 990-N | No figure |
| Renfro Parent and Staff Organization IncCollinsville | Form 990-N | No figure |
| Parent Teacher Organization of Barrington High SchoolBarrington | Form 990-N | No figure |
| Ivy Pearl FoundationEvanston | Form 990-N | No figure |
| Freeburg Elementary School Parent Teacher OrganizationFreeburg | Form 990-EZ | $28,170FY2025 |
| Parent Booster USA IncShorewood | Form 990-EZ | $28,152FY2025 |
| Associated Colleges of the Chicago AreaNaperville | Form 990-N | No figure |
| Jack Brokaw Trade School Scholarship FundBiggsville | Form 990-N | No figure |
| Columbia Kiwanis Foundation IncColumbia | Form 990-N | No figure |
| Buffalo Grove High School Bison BoostersBuffalo Grove | Form 990-N | No figure |