| School Name | IATE District | School Address | School City | School District | School County | Public or Private | School Level |
|---|---|---|---|---|---|---|---|
| Trinity Lutheran | Metro South | 18144 Glen Ter | Lansing | Cook | 1 | ||
| Trinity Lutheran | Central | 1102 W Hamilton Rd | Bloomington | McClean | 1 | ||
| Trinity Lutheran | South Central | PO Box 118 | Arenzville | Cass | 1 | ||
| Trinity Lutheran Church | South Central | 1010 N Webster St | Taylorville | Christian | 1 | ||
| Trinity Lutheran Church | Northwestern | 215 N 1st St | Rockford | Winnebago | 1 | ||
| Trinity Lutheran Pre-School | Western Suburban | 331 George St | West Chicago | DuPage | 1 | ||
| Trinity Lutheran School | Southern | 203 S Pleasant Ave | Centralia | Clinton Jefferson Marion and Washington | 1 | Elementary | |
| Trinity Lutheran School | Kaskaskia | PO Box 200 | Hoffman | Clinton | 1 | ||
| Trinity Lutheran School | Southern | 10247 S Prairie Rd | Red Bud | Randolph | 1 | ||
| Trinity Lutheran School | Eastern | PO Box 307 | Stewardson | Shelby | 1 | ||
| Trinity Lutheran School | Western Suburban | 405 Rush St | Roselle | DuPage | 1 | Elementary | |
| Trinity Lutheran School | Western Suburban | 1165 S Westmore | Lombard | DuPage | 1 | Elementary | |
| Trinity Luthern Church UAC | Southern | 1000 N Park Ave | Herrin | Williamson | 1 | ||
| Trinity Oaks Christian Academy | Northeastern | 409 1st St | Cary | McHenry | 1 | ||
| Trinity Resources Unlimited | Metro North and West | 919 N Lavergne Ave | Chicago | Cook | 1 | ||
| Trinity School | Western Suburban | 331 George St | West Chicago | West Chicago ESD 33 | DuPage | Public | |
| Trinity Services Inc | Metro South | 100 Gougar Rd | New Lenox | Will | 1 | ||
| Trinity United Ch of Christ CCC | Metro South | 1947 W 95th St | Chicago | Cook | 1 | ||
| Trinity United Methodist | Kaskaskia | 5110 Forest Blvd | Washington Pk | St. Clair | 1 | ||
| Trinity-St John Lutheran | Kaskaskia | 680 W Walnut St | Nashville | Washington | 1 | ||
| Trinity-St Paul Lutheran School | Marquette | 6961 W Frontage Rd | Worden | Madison | 1 | ||
| Triopia CUSD 27 | South Central | 2204 Cncrd-Arnzville | Concord | Triopia CUSD 27 | Morgan | Public | |
| Triopia Grade School | South Central | 2206 Cncrd-Arnzville | Concord | Triopia CUSD 27 | Morgan | Public | Elementary |
| Triopia Jr-Sr High School | South Central | 2204 Cncrd Arnzville | Concord | Triopia CUSD 27 | Morgan | Public | High School |
| Triple R Child Care | Metro South | 9500 W La Porte Rd | Mokena | Will | 1 | ||
| Triple R Child Care Inc | Metro South | 5500 147th St | Oak Forest | Cook | 1 | ||
| Tripp School | Northwest Suburban | 850 Highland Grv | Buffalo Grove | Aptakisic-Tripp CCSD 102 | Cook/Lake | Public | Elementary |
| Triton College District 504 | Western Suburban | 2000 5th Ave | River Grove | Cook | 1 | College | |
| Troy CCSD 30C | Metro South | 5800 Theodore Dr | Plainfield | Troy CCSD 30C | Will | Public | |
| Troy Craughwell School | Metro South | 3333 Black Rd | Joliet | Troy CCSD 30C | Will | Public | Elementary |
| Troy Craughwell School | Metro South | 3333 Black Rd | Joliet | Troy CCSD 30C | Will | Public | Elementary |
| Troy Crossroads Elem School | Metro South | 210 E Black Rd | Shorewood | Troy CCSD 30C | Will | Public | Elementary |
| Troy Crossroads Elem School | Metro South | 210 E Black Rd | Shorewood | Troy CCSD 30C | Will | Public | Elementary |
| Troy Heritage Trail School | Metro South | 3389 Longford Dr | Joliet | Troy CCSD 30C | Will | Public | Elementary |
| Troy Heritage Trail School | Metro South | 3389 Longford Dr | Joliet | Troy CCSD 30C | Will | Public | Elementary |
| Troy Hofer Elem Sch | Metro South | 910 Vertin Blvd | Shorewood | Troy CCSD 30C | Will | Public | Elementary |
| Troy Hofer Elem Sch | Metro South | 910 Vertin Blvd | Shorewood | Troy CCSD 30C | Will | Public | Elementary |
| Troy Middle School | Metro South | 5800 Theodore Dr | Plainfield | Troy CCSD 30C | Will | Public | Middle School |
| Troy Middle School | Metro South | 5800 Theodore Dr | Plainfield | Troy CCSD 30C | Will | Public | Middle School |
| Troy Shorewood School | Metro South | 210 School Rd | Shorewood | Troy CCSD 30C | Will | Public | Elementary |
| Troy Shorewood School | Metro South | 210 School Rd | Shorewood | Troy CCSD 30C | Will | Public | Elementary |
| Tru-Source ALF | Western Suburban | 1040 No Blvd Ste250 | Oak Park | Cook | 1 | ||
| True Success Express Inc | Metro South | 5647 Blackstone | Chicago | Cook | 1 | ||
| True to Life Foundation | Metro South | 1712 E 87th St | Chicago | Cook | 1 | ||
| True Vine Christian Academy | Western Suburban | 400 23rd Ave | Bellwood | Cook | 1 | ||
| True Vine Christian Center | Kaskaskia | 2241 Country Rd | Belleville | St. Clair | 1 | ||
| True Vine Christian Center | Kaskaskia | 2241 Country Rd | Belleville | St. Clair | 1 | ||
| True Witness Church of God | Metro North and West | 122 N California Ave | Chicago | Cook | 1 | ||
| TUAC Inc | Metro South | 1312 W 95th St | Chicago | Cook | 1 | ||
| Tubman Elem School | Metro North and West | 2851 N Seminary Ave | Chicago | City of Chicago SD 299 | Cook | Public | Elementary |
| Tuesdays Child | Metro North and West | 4028 W Irving Park | Chicago | Cook | 1 | ||
| Turner Elem School | Metro South | 3847 W 135th St | Robbins | Posen-Robbins ESD 143-5 | Cook | Public | Elementary |
| Turner Elem School | Western Suburban | 750 Ingalton Ave | West Chicago | West Chicago ESD 33 | DuPage | Public | Elementary |
| Turner-Drew Elem Language Academy | Metro South | 9300 S Princeton Ave | Chicago | City of Chicago SD 299 | Cook | Public | Elementary |
| Turning Point | Northeastern | PO Box 723 | Woodstock | McHenry | 1 | ||
| Turtle Express Inc | North Lakes | 423 W Liberty St | Wauconda | Lake | 1 | ||
| Tuscola CUSD 301 | Eastern | 409 S Prairie St | Tuscola | Tuscola CUSD 301 | Douglas | Public | |
| Tuscola High School | Eastern | 500 S Prairie St | Tuscola | Tuscola CUSD 301 | Douglas | Public | High School |
| Tutor Time Learning Ctrs LLC | 21333 Haggerty #300 | Novi | 1 | ||||
| Twain Elem School | Metro South | 5134 S Lotus Ave | Chicago | City of Chicago SD 299 | Cook | Public | Elementary |
| Twenty Pearls Foundation Inc | Metro South | 2311 W 183rd St 205 | Homewood | Cook | 1 | ||
| Twin Echo Elem School | Marquette | 1937 S Morrison Ave | Collinsville | Collinsville CUSD 10 | Madison | Public | Elementary |
| Twin Groves Middle School | Northwest Suburban | 2600 N Buffalo Grv | Buffalo Grove | Kildeer Countryside CCSD 96 | Cook/Lake | Public | Middle School |
| Twinbrook YMCA | Northwest Suburban | 300 W Wise Rd | Schaumburg | Cook | 1 | ||
| Two by Two Daycare Inc | East Central | 3350 E Voorhees St | Danville | Vermilion | 1 | ||
| Two Rivers Comm Dev Ctr | Southern | PO Box 503 | Cairo | Alexander | 1 | ||
| Two Rivers Regional Council | Mississippi Valley | 1125 Hampshire St | Quincy | Adams | 1 | ||
| Two Rivers YMCA Inc | Blackhawk | 2040 53rd St | Moline | Rock Island | 1 | ||
| Two-Rivers Head Start | Northeastern | 1661 Landmark Rd | Aurora | Kane | 1 | ||
| Twp HSD 113 | North Lakes | 1040 Park Ave W | Highland Park | Twp HSD 113 | Lake | Public | |
| Tyler Elementary School | Rock River | 1021 Alden Circle Dr | De Kalb | DeKalb CUSD 428 | DeKalb | Public | Elementary |
| U S Grant Elem School | Metro South | 2712 Miller Ave | South Chicago Hei | Chicago Heights SD 170 | Cook | Public | Elementary |
| U S Grant Middle School | South Central | 1800 W Monroe St | Springfield | Springfield SD 186 | Sangamon | Public | Middle School |
| U Tri God | North Lakes | 1626 23rd St | Zion | Lake | 1 | ||
| UCP of Greater Chicago | Metro North and West | 155 N Wacker Dr | Chicago | Cook | 1 | ||
| UCP of Illinois Prairieland | Metro South | 311 S Reed St | Joliet | Will | 1 | ||
| Uhlich Academy | Metro North and West | 3110 W Grand Ave | Chicago | Cook | 1 | ||
| Uhlich Childs Advantage Ntwrk | Metro North and West | 3737 N Mozart St | Chicago | Cook | 1 | ||
| Ujima Family Services Assoc | East Central | 525 N Harrison Ave | Kankakee | Kankakee | 1 | ||
| Ultimate Blessings Inc | Metro South | 15440 Turlington Ave | Harvey | Cook | 1 | ||
| Ultimate Goal Ministries Inc | Metro South | 14611 Jefferson St | Harvey | Cook | 1 | ||
| Ulysses S Grant Intermediate Sch | Northeastern | 816 E Grant Hwy | Marengo | Marengo-Union E Cons D 165 | McHenry | Public | Elementary |
| UMOJA Student Development Corp | Metro North and West | 2935 W Polk Rm 116 | Chicago | Cook | 1 | ||
| Under Carreys Care Corporation | Metro South | 419 W 144th St | Riverdale | Cook | 1 | ||
| Uni-Pres Kinder Cottage | Kaskaskia | 564 Veronica Ave | East Saint Louis | St. Clair | 1 | ||
| Union Ave Christian Ch Kings Kid | South Central | 422 E Union Ave | Litchfield | Montgomery | 1 | ||
| Union Avenue Community | Metro South | 4350 S Union Ave | Chicago | Cook | 1 | ||
| Union Baptist Church | South Central | 1405 E Monroe St | Springfield | Sangamon | 1 | ||
| Union Co Counseling Serv Inc | Southern | 204 South St | Anna | Union | 1 | ||
| Union Elem School | Kaskaskia | 20 S 27th St | Belleville | Belleville SD 118 | St. Clair | Public | Elementary |
| Union Elementary School | Metro South | 1661 Cherry Hill Rd | Joliet | Union SD 81 | Will | Public | Elementary |
| Union Elementary School | Metro South | 1661 Cherry Hill Rd | Joliet | Union SD 81 | Will | Public | Elementary |
| Union Evanagelistic Baptist Churc | Metro South | 1625 Center Ave | Chicago Heights | Cook | 1 | ||
| Union League Boys & Girls Club | Metro North and West | 65 W Jackson Blvd | Chicago | Cook | 1 | ||
| Union Park High School Inc | Metro North and West | 4319 W Washington | Chicago | Cook | 1 | High School | |
| Union Planters Bank | Kaskaskia | 1 S Church St | Belleville | St. Clair | 1 | ||
| Union Ridge 86-Jefferson Twp Tre | Metro South | 4704 N Oak Park Ave | Harwood Heights | Cook | 1 | ||
| Union Ridge Elem School | Metro South | 4600 N Oak Park Ave | Harwood Heights | Union Ridge SD 86 | Cook | Public | Elementary |
| Union Ridge SD 86 | Metro South | 4600 N Oak Park Ave | Harwood Heights | Union Ridge SD 86 | Cook | Public | |
| Union SD 81 | Metro South | 1661 Cherry Hill Rd | Joliet | Union SD 81 | Will | Public |
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