| Kimball Hill Elementary School | Rolling Meadows | 524 |
| Kimball Middle School | Elgin | 501 |
| Kimberly Heights Elementary School | Tinley Park | 181 |
| Kimes Elementary School | Streator | 415 |
| King Academy of Social Justice | Chicago | 213 |
| King College Prep High School | Chicago | 819 |
| King Middle Grade School | Kankakee | 385 |
| King School | Galesburg | 510 |
| Kings Elementary School | Kings | 81 |
| Kingsley Elementary School | Downers Grove | 359 |
| Kingsley Elementary School | Evanston | 334 |
| Kingsley Elementary School | Naperville | 415 |
| Kingsley Junior High School | Normal | 730 |
| Kingston Elementary School | Kingston | 310 |
| Kinnikinnick School | Roscoe | 350 |
| Kinzie Elementary School | Chicago | 637 |
| Kipling Elementary School | Chicago | 237 |
| Kipling Elementary School | Deerfield | 452 |
| Kirk School | Palatine | |
| Knox Co Mary Davis Detention Home | Galesburg | 0 |
| Knox-Warren SpEd Multi-Needs Prog | Galesburg | |
| Knoxville Cntr Student Success | Peoria | 0 |
| Knoxville Junior High School | Knoxville | 262 |
| Knoxville Safe School Program | Peoria | 0 |
| Knoxville Sr High School | Knoxville | 272 |
| Kolmar Avenue Elementary School | Oak Lawn | 391 |
| Kolmar Elementary School | Midlothian | 535 |
| Komarek Elementary School | North Riverside | 570 |
| Komensky Elementary School | Berwyn | 320 |
| Kozminski Elementary Community Academy | Chicago | 275 |
| Kreitner Elementary School | Collinsville | 378 |
| L D Brady Elementary School | Aurora | 310 |
| L E Starke Elementary School | Pekin | 139 |
| L J Hauser Junior High School | Riverside | 597 |
| L J Stevens Intermediate School | Wilmington | 353 |
| L&C Elementary/Region III | Cottage Hills | |
| L&C Middle School/Region III | Wood River | |
| LADSE-Comm Develop | La Grange | |
| LADSE-DHH Transition Cntr | LaGrange | |
| LADSE-DHH-Hinsdale South High School | Darien | |
| Ladse-Ecse | La Grange | |
| LADSE-Emotional Disabilities | La Grange | |
| LADSE-Multineeds | La Grange | |
| LADSE-Phonological Program | La Grange | |
| LADSE-Project Search | La Grange | |
| LASEC Academy | Lockport | |
| LASEC-CAD Program | Lockport | |
| LASEC-Communication Dev Program | Crest Hill | |
| Lasec-Ec | Crest Hill | |
| LASSO RMS District 12 | Roselle | |
| LASSO-Erickson Elem-Bloomingdale | Bloomingdale | |
| LASSO-Medinah Primary Sch-Medinah | Medinah | |
| LASSO-Spring Hills Sch-Roselle SD | Roselle | |
| LASSO-Tioga Elementary Sch-Bensenville | Bensenville | |
| LEARN 10 Charter School | North Chicago | 297 |
| LEARN Charter Excel Campus | Chicago | 379 |
| LEARN Chtr - Hunter Perkins Camp | Chicago | 472 |
| LEARN Chtr - 7th Campus | Chicago | 144 |
| LEARN Chtr - Butler | Chicago | 475 |
| LEARN Chtr - Middle School | Chicago | 176 |
| LEARN Chtr - South Chicago Campus | Chicago | 390 |
| LEARN Chtr School 6 N Chicago Campus | Great Lakes | 503 |
| LEARN Chtr-Campbell Campus | Chicago | 357 |
| LEARN John Kathy Schreiber Chrtr | Waukegan | 519 |
| LIFE (Learning in Functional Envi | Jacksonville | |
| LIFE Academy | Mattoon | 0 |
| Lift | Mattoon | 0 |
| LMP Roe | Peru | 0 |
| LMP Roe Alop | Peru | 0 |
| LMP Roe Taoep | Peru | 0 |
| LMP Regional Office of Education | Ottawa | 0 |
| LWASE-Self-K-8 | Frankfort | |
| La Harpe Elementary School | La Harpe | 181 |
| La Moille Jr/Sr High School | La Moille | 86 |
| La Salle-Peru Area Career Center | Peru | 0 |
| La Salle-Peru Township High School | La Salle | 1,167 |
| LaSalle Co Detention Center 6-8 | Ottawa | 0 |
| LaSalle Co Detention Center 9-12 | Ottawa | 0 |
| LaSalle Elementary Language Academy | Chicago | 456 |
| LaSalle Elementary School | Creve Coeur | 262 |
| LaSalle II Lang Academy Elementary School | Chicago | 589 |
| Lace Elementary School | Darien | 377 |
| Ladd Community Consolidated School | Ladd | 183 |
| Ladse Learning Center | La Grange | |
| Lake Bluff Elementary School | Lake Bluff | 572 |
| Lake Bluff Middle School | Lake Bluff | 305 |
| Lake Co Collaborative Alop | Grayslake | 0 |
| Lake Co High Schools Tech Campus | Grayslake | 0 |
| Lake Co Hulse Detention Center 6- | Vernon Hills | 0 |
| Lake Co Hulse Detention Center 9- | Vernon Hills | 0 |
| Lake County Cooperative ALOP | Gages Lake | 0 |
| Lake Crest Elementary School | Oakland | 185 |
| Lake Forest High School | Lake Forest | 1,359 |
| Lake Louise Elementary School | Palatine | 608 |
| Lake Park Elementary School | Addison | 294 |
| Lake Park High School | Roselle | 2,522 |
| Lake School | Granite City | 0 |
| Lake View High School | Chicago | 1,431 |
| Lake Zurich CUSD 95 Young Adult C | Lake Zurich | 0 |
| Lake Zurich High School | Lake Zurich | 1,839 |
| Lake Zurich Middle - N Campus | Hawthorn Woods | 697 |
| Lake Zurich Middle - S Campus | Lake Zurich | 599 |
| Lake in the Hills Elementary School | Lk in the Hls | 502 |
| Lakes Community High School | Lake Villa | 1,334 |
| Laketown Elementary School | Springfield | 135 |
| Lakeview Elementary School | Hoffman Estates | 504 |
| Lakeview Junior High School | Downers Grove | 340 |
| Lakeview School | Zion | 249 |
| Lakewood Creek Elementary | Montgomery | 767 |
| Lakewood Falls Elementary School | Plainfield | 543 |
| Lakewood School | Carpentersville | 590 |
| Lalumier Elementary School | Centreville | 276 |
| Landmark Elementary School | McHenry | 189 |
| Lane Elementary School | Alsip | 228 |
| Lane Technical High School | Chicago | 4,604 |
| Langford A Elementary School | Chicago | 181 |
| Lanphier High School | Springfield | 1,117 |
| Lara Elementary Academy | Chicago | 362 |
| Laraway School | Joliet | 433 |
| Laremont School | Gages Lake | 0 |
| Larkin High School | Elgin | 2,174 |
| Larsen Middle School | Elgin | 570 |
| Laura B Sprague School | Lincolnshire | 525 |
| Laurel Hill Elementary School | Hanover Park | 384 |
| Laverna Evans Elementary School | O Fallon | 421 |
| Lavizzo Elementary School | Chicago | 394 |
| Lawn Manor School | Oak Lawn | 210 |
| Lawndale Elementary Community Academy | Chicago | 191 |
| Lawrenceville High School | Lawrenceville | 298 |
| LeClaire Elementary School | Edwardsville | 312 |
| LeRoy Elementary School | Le Roy | 405 |
| LeRoy High School | Le Roy | 232 |
| LeRoy Junior High School | Le Roy | 102 |
| Leal Elementary School | Urbana | 373 |
| Lebanon Elementary School | Lebanon | 312 |
| Lebanon High School | Lebanon | 218 |
| Ledgewood Elementary School | Roscoe | 375 |
| Lee Cty SpEd-ECE | Dixon | |
| Lee Cty SpEd-Life Skills (2-5 Gra | Dixon | |
| Lee Cty SpEd-Life Skills (6-8 Gra | Dixon | |
| Lee Cty SpEd-Life Skills (9-12 Gr | Dixon | |
| Lee Cty SpEd-Transitions | Dixon | |
| Lee Elementary School | Chicago | 581 |
| Lee R Foster Elementary School | Oak Forest | 397 |
| Legacy Academy of Excellence Charter | Rockford | 234 |
| Legacy Elementary Charter School | Chicago | 458 |
| Legal Prep Academy Charter High School | Chicago | 210 |
| Leggee Elementary School | Huntley | 877 |
| Leland Elementary School | Chicago | 344 |
| Leland Elementary School | Leland | 175 |
| Leland High School | Leland | 88 |
| Leman Middle School | West Chicago | 1,048 |
| Lemont Township High School | Lemont | 1,284 |
| Lena-Winslow Elementary School | Lena | 412 |
| Lena-Winslow High School | Lena | 232 |
| Lena-Winslow Junior High School | Lena | 173 |
| Lenart Elementary Regional Gifted Center | Chicago | 300 |
| Lerna Bridges | Lerna | 0 |
| Lerna TAOEP | Charleston | 0 |
| Lester Crawl Primary Center | Lansing | 135 |
| Lester Elementary School | Downers Grove | 531 |
| Lettie Brown Elementary School | Morton | 346 |
| Lewis & Clark Elementary School | Godfrey | 251 |
| Lewis Elementary School | Chicago | 427 |
| Lewis Lemon Elementary | Rockford | 378 |
| Lewis School | Carbondale | 325 |
| Lewis-Clark Elementary School | Wood River | 236 |
| Lewis-Clark Junior High School | Wood River | 171 |
| Lewistown Jr/Sr High School | Lewistown | 262 |
| Lexington Elementary School | Lexington | 238 |
| Lexington High School | Lexington | 163 |
| Lexington Junior High School | Lexington | 110 |
| Libby Elementary School | Chicago | 275 |
| Liberty Elementary School | Cicero | 453 |
| Liberty Elementary School | Danville | 377 |
| Liberty Elementary School | Bartlett | 401 |
| Liberty Elementary School | Orland Park | 627 |
| Liberty Elementary School | Carpentersville | 749 |
| Liberty Elementary School | Liberty | 336 |
| Liberty Elementary School | Bolingbrook | 522 |
| Liberty High School | Liberty | 253 |
| Liberty Intermediate School | Bourbonnais | 714 |
| Liberty Junior High School | New Lenox | 573 |
| Liberty Junior High School | Burbank | 1,087 |
| Liberty Leadership Middle School | Peoria | 350 |
| Liberty Middle School | Edwardsville | 888 |
| Libertyville High School | Libertyville | 1,777 |
| Lick Creek Elementary School | Buncombe | 126 |
| Lily Lake Grade School | Maple Park | 275 |
| Limestone Community High School | Peoria | 898 |
| Limestone Middle School | Kankakee | 468 |
| Limestone Walters Elementary School | Peoria | 169 |
| Lincoln Academy | Roselle | |
| Lincoln Attendance Center | Carmi | 176 |
| Lincoln Cltrl Ctr-Montessori Elementary | Kankakee | 437 |
| Lincoln Community High School | Lincoln | 764 |
| Lincoln Early Childhood School | Monmouth | 324 |
| Lincoln Elementary School | Addison | 345 |
| Lincoln Elementary School | Anna | 235 |
| Lincoln Elementary School | Belvidere | 573 |
| Lincoln Elementary School | Blue Island | 342 |
| Lincoln Elementary School | Calumet City | 717 |
| Lincoln Elementary School | Chicago | 868 |
| Lincoln Elementary School | Chicago Heights | 84 |
| Lincoln Elementary School | Clinton | 183 |
| Lincoln Elementary School | East Peoria | 148 |
| Lincoln Elementary School | Elmhurst | 527 |
| Lincoln Elementary School | Evanston | 343 |
| Lincoln Elementary School | Dixmoor | 174 |
| Lincoln Elementary School | Jacksonville | 246 |
| Lincoln Elementary School | Pittsburg | 163 |
| Lincoln Elementary School | Brookfield | 366 |
| Lincoln Elementary School | Macomb | 412 |
| Lincoln Elementary School | Marion | 482 |
| Lincoln Elementary School | Maywood | 431 |
| Lincoln Elementary School | Mendota | 319 |
| Lincoln Elementary School | Morton | 517 |
| Lincoln Elementary School | Mundelein | 88 |
| Lincoln Elementary School | Oglesby | 328 |
| Lincoln Elementary School | Ottawa | 387 |
| Lincoln Elementary School | Princeton | 211 |
| Lincoln Elementary School | River Forest | 381 |
| Lincoln Elementary School | Rochelle | 491 |
| Lincoln Elementary School | Wheaton | 458 |
| Lincoln Elementary School | Sterling | 277 |
| Lincoln Elementary | Plainfield | 536 |
| Lincoln Elementary School | Bellwood | 310 |
| Lincoln Elementary School | Canton | 186 |
| Lincoln Elementary School | DeKalb | 272 |
| Lincoln Elementary School | Dolton | 342 |
| Lincoln Elementary School | Hoffman Estates | 467 |
| Lincoln Elementary School | Palatine | 772 |
| Lincoln Elementary School | Pontiac | 227 |
| Lincoln Elementary School | Robinson | 326 |
| Lincoln Grade School | Washington | 442 |
| Lincoln Hall Middle School | Lincolnwood | 413 |
| Lincoln Junior High School | La Salle | 269 |
| Lincoln Junior High School | Lincoln | 321 |
| Lincoln Junior High School | Naperville | 774 |
| Lincoln Junior High School | Skokie | 628 |
| Lincoln Junior High School | Dolton | 168 |
| Lincoln Magnet School | Springfield | 300 |
| Lincoln Middle School | Berwyn | 793 |
| Lincoln Middle School | Edwardsville | 736 |
| Lincoln Middle School | Mt Prospect | 784 |
| Lincoln Middle School | Park Ridge | 749 |
| Lincoln Middle School | Schiller Park | 474 |
| Lincoln Park High School | Chicago | 2,214 |
| Lincoln Prairie Elementary School | Lake in the Hills | 479 |
| Lincoln Prairie School | Hoffman Estates | 348 |
| Lincoln School | Mundelein | 128 |
| Lincoln School | E Hazel Crest | 0 |
| Lincoln School | Peoria | 823 |
| Lincoln School ALOP | Joliet | 0 |
| Lincoln School RSSP | Joliet | 0 |
| Lincoln School TAOEP | Joliet | 0 |
| Lincoln Trail Elementary School | Mahomet | 801 |
| Lincoln Way West | New Lenox | 2,047 |
| Lincoln-Douglas Elementary School | Freeport | 325 |
| Lincoln-Douglas Elementary School | Quincy | 588 |
| Lincoln-Irving Elementary School | Moline | 382 |
| Lincoln-Way Central High School | New Lenox | 1,991 |
| Lincoln-Way East High School | Frankfort | 2,696 |
| Lincolnland Technical Ed Center | Lincoln | 0 |
| Lincolnwood Elementary School | Evanston | 288 |
| Lincolnwood High School | Raymond | 137 |
| Lincolnwood Junior High School | Raymond | 90 |
| Lindblom Math & Science Academy High School | Chicago | 1,316 |
| Lindop Elementary School | Broadview | 307 |
| Lindsay School | Springfield | 438 |
| Linne Elementary School | Chicago | 687 |
| Lions Park Elementary School | Mt Prospect | 458 |
| Lisbon CCSD 90 | Newark | |
| Lisbon Grade School | Newark | 121 |
| Lisle Elementary School | Lisle | 777 |
| Lisle High School | Lisle | 447 |
| Lisle Junior High School | Lisle | 338 |
| Litchfield Early Childhood Center | Litchfield | 160 |
| Litchfield Elementary School | Litchfield | 355 |
| Litchfield Middle School | Litchfield | 282 |
| Litchfield Senior High School | Litchfield | 382 |
| Little Fort Elementary School | Waukegan | 421 |
| Little Village Elementary School | Chicago | 575 |
| Littlejohn Elementary School | DeKalb | 362 |
| Livingston Area Career Cntr | Pontiac | 0 |
| Livingston Co Crossroads Academy | Flanagan | |
| Livingston County Academy | Flanagan | |
| Lloyd Elementary School | Chicago | 844 |
| Locke J Elementary School | Chicago | 1,089 |
| Locke A Elementary Charter Academy | Chicago | 346 |
| Lockport Township High School East | Lockport | 3,678 |
| Locust Elementary School | Marengo | 501 |
| Logan Elementary School | Moline | 290 |
| Logan Junior High School | Princeton | 443 |
| Logan Square Elementary | Chicago | 630 |
| Lombard Middle School | Galesburg | 534 |
| Long Beach Elementary School | Montgomery | 632 |
| Longfellow Elementary School | Marion | 261 |
| Longfellow Elementary School | Oak Park | 524 |
| Longfellow Elementary School | Rock Island | 262 |
| Longfellow Elementary School | Wheaton | 318 |
| Longwood Elementary School | Glenwood | 364 |
| Longwood Elementary School | Naperville | 346 |
| Lords Park Elementary School | Elgin | 655 |
| Lorenzo R Smith Elementary School | Pembroke Township | 193 |
| Lostant Elementary School | Lostant | 63 |
| Lotus School | Spring Grove | 345 |
| Louise White Elementary School | Batavia | 440 |
| Lovejoy Elementary School | Alton | 230 |
| Lovejoy Elementary School | Lovejoy | 67 |
| Lovejoy Middle School | Lovejoy | 24 |
| Lovejoy Technology Academy | Lovejoy | 27 |
| Loves Park Elementary School | Loves Park | 279 |
| Lovett Elementary School | Chicago | 342 |
| Lovington Grade School | Lovington | 148 |
| Lowell Elementary School | Chicago | 311 |
| Lowell Elementary School | Wheaton | 283 |
| Lowpoint-Washburn Elementary School | Washburn | 157 |
| Lowpoint-Washburn Jr Sr High School | Washburn | 156 |
| Lowrie Elementary School | Elgin | 397 |
| Lozano Elementary Bilingual & Intl Center | Chicago | 256 |
| Ludlow Elementary School | Ludlow | 52 |
| Ludwig Elementary School | Lockport | 321 |
| Lundahl Middle School | Crystal Lake | 797 |
| Luther Burbank Elementary School | Burbank | 453 |
| Luther J Schilling School | Homer Glen | 587 |
| Lyle School | Kewanee | 173 |
| Lynn G Haskin Elementary School | Sandwich | 226 |
| Lynne Thigpen Elementary School | Joliet | 620 |
| Lyon Elementary School | Chicago | 988 |
| Lyon Elementary School | Glenview | 454 |
| Lyon Magnet Elementary School | Waukegan | 430 |
| Lyons Township High School | La Grange | 3,706 |
| M J Cunningham Elementary School | Joliet | 484 |
| M L King Jr Elementary School | Urbana | 322 |
| MVTHS East Campus | Mount Vernon | 0 |
| Mabel O Donnell Elementary School | Aurora | 360 |
| Mable Woolsey Elementary School | Knoxville | 383 |
| MacArthur Early Childhood Center | Macomb | 127 |
| MacArthur High School | Decatur | 1,059 |
| MacArthur Intrntl Spanish Academy | Hoffman Estates | 435 |
| MacArthur MS-D/HH MS Program | Prospect Heights | |
| MacArthur Middle School | Berkeley | 357 |
| MacArthur Middle School | Prospect Heights | 483 |
| MacArthur/ECHO Elementary | South Holland | |
| Machesney Elementary School | Machesney Park | 361 |
| Mackeben Elementary School | Algonquin | 522 |
| Macomb Middle School | Macomb | 479 |
| Macomb Senior High School | Macomb | 660 |
| Macon/Piatt ROE 39 ALOP | Decatur | 0 |
| Maddock Elementary School | Burbank | 356 |
| Madero Middle School | Chicago | 231 |
| Mades-Johnstone Center | St Charles | |
| Mades-Johnstone RSSP | St Charles | 0 |
| Madison Co Detention Center | Edwardsville | 0 |
| Madison Elementary School | Chicago | 224 |
| Madison Elementary School | Hinsdale | 367 |
| Madison Elementary School | Skokie | 609 |
| Madison Elementary School | Wheaton | 360 |
| Madison Elementary School | Lombard | 477 |
| Madison Junior High School | Madison | 124 |
| Madison Junior High School | Naperville | 566 |
| Madison School | Dixon | 323 |
| Madison School | South Holland | 277 |
| Madison Senior High School | Madison | 152 |
| Madison Student Support Center | Madison | 0 |
| Mae Jemison School | Hazel Crest | 368 |
| Maercker Elementary School | Westmont | 456 |
| Magee Middle School | Round Lake | 642 |
| Mahomet-Seymour High School | Mahomet | 1,050 |
| Mahomet-Seymour Junior High School | Mahomet | 812 |
| Main Street Elementary School | Shelbyville | 370 |
| Maine East High School | Park Ridge | 1,921 |
| Maine South High School | Park Ridge | 2,494 |
| Maine West High School | Des Plaines | 1,857 |
| Malden Grade School | Malden | 79 |
| Malta Elementary School | Malta | 293 |
| Manchester Elementary School | Poplar Grove | 136 |
| Manhattan Intermediate School | Manhattan | 417 |
| Manhattan Junior High School | Manhattan | 615 |
| Manierre Elementary School | Chicago | 269 |
| Manley Career Academy High School | Chicago | 193 |
| Mann Elementary School | Chicago | 283 |
| Mannheim Early Childhood Center | NorthLake | 157 |
| Mannheim Middle School | Melrose Park | 768 |
| Manor Hill Elementary School | Lombard | 285 |
| Manteno Elementary School | Manteno | 694 |
| Manteno High School | Manteno | 587 |
| Manteno Middle School | Manteno | 520 |
| Manual High School | Peoria | 731 |
| Maple Elementary School | Loves Park | 313 |
| Maple Elementary School | Hoopeston | 277 |
| Maple Grove Elementary School | Joppa | 122 |
| Maple School | Northbrook | 451 |
| Maplebrook Elementary School | Naperville | 512 |
| Maplewood Elementary School | Cahokia | 290 |
| Marengo Community Middle School | Marengo | 342 |
| Marengo High School | Marengo | 685 |
| Margaret Mead JHS | Elk Grove Village | 702 |
| Maria Saucedo Magnet Academy | Chicago | 922 |
| Marie Murphy School | Wilmette | 253 |
| Marie Schaefer Elementary School | O Fallon | 598 |
| Marine Elementary School | Marine | 141 |
| Marine Leadership Academy - Ames | Chicago | 549 |
| Marion High School | Marion | 1,075 |
| Marion Jordan Elementary School | Palatine | 503 |
| Marion Junior High School | Marion | 742 |
| Marissa Elementary School | Marissa | 266 |
| Marissa Jr & Sr High School | Marissa | 226 |
| Mark DeLay School | Darien | 453 |
| Mark Denman Elementary School | Danville | 545 |
| Mark Twain | Alton | 0 |
| Mark Twain Elementary School | Charleston | 221 |
| Mark Twain Elementary School | Niles | 489 |
| Mark Twain Elementary School | Wheeling | 524 |
| Mark Twain Primary School | Kankakee | 192 |
| Mark W Bills Middle School | Peoria | 258 |
| Markham Park Elementary School | Markham | 292 |
| Marlowe Middle School | Lake in the Hills | 1,215 |
| Maroa-Forsyth Grade School | Forsyth | 593 |
| Maroa-Forsyth Middle School | Maroa | 271 |
| Maroa-Forsyth Senior High School | Maroa | 348 |
| Marquardt Middle School | Glendale Hts | 754 |
| Marquette Elementary School | Chicago | 1,030 |
| Marquette Elementary School | Machesney Park | 268 |
| Marquette Elementary School | Marquette Heights | 223 |
| Marseilles Elementary School | Marseilles | 528 |
| Marsh Elementary School | Chicago | 616 |
| Marshall High School | Marshall | 350 |
| Marshall Junior High School | Marshall | 186 |
| Marshall Metropolitan High School | Chicago | 239 |
| Martin Elementary School | Lake in the Hills | 776 |
| Martin L King Elementary School | Dixmoor | 320 |
| Martin P McKay Education Center | New Lenox | |
| Martinsville Elementary School | Martinsville | 238 |
| Martinsville Jr- Sr High School | Martinsville | 146 |
| Mary Drew Early Learning Center | Frankfort | 94 |
| Mary Endres Elementary School | Woodstock | 431 |
| Mary Kay McNeill ELC | Antioch | 108 |
| Mary Lou Cowlishaw Elementary | Naperville | 589 |
| Mary Miller Junior High School | Georgetown | 192 |
| Mary Morgan Elementary School | Byron | 631 |
| Marya Yates Elementary School | Matteson | 284 |
| Marycrest Early Childhood Center | Joliet | 142 |
| Maryville Elementary School | Maryville | 406 |
| Maryville Elementary School | Granite City | 395 |
| Mascoutah Elementary School | Mascoutah | 853 |
| Mascoutah High School | Mascoutah | 1,243 |
| Mascoutah Middle School | Mascoutah | 973 |
| Mason Elementary School | Chicago | 241 |
| Mason/Clark Middle School | East Saint Louis | 540 |
| Massac County High School | Metropolis | 512 |
| Massac Junior High School | Metropolis | 309 |
| Matheny-Withrow Elementary School | Springfield | 216 |
| Mather High School | Chicago | 1,777 |
| Matherville Intermediate School | Matherville | 182 |
| Matteson Elementary School | Matteson | 420 |
| Matthews Middle School | Island Lake | 451 |
| Mattoon High School | Mattoon | 888 |
| Mattoon Middle School | Mattoon | 610 |
| Maud E Johnson Elementary School | Rockford | 425 |
| May Watts Elementary School | Naperville | 668 |
| May Whitney Elementary School | Lake Zurich | 677 |
| Maya Angelou Elementary School | Harvey | 271 |
| Mayer Elementary School | Chicago | 707 |
| Mayo Middle School | Paris | 241 |
| Mays Elementary Academy | Chicago | 277 |
| Mazon-Verona-Kinsman Elementary School | Mazon | 172 |
| Mazon-Verona-Kinsman Middle School | Mazon | 144 |
| McAuliffe Elementary School | Chicago | 523 |
| McCarty Elementary School | Aurora | 478 |
| McClean Co Detention Center | Normal | 0 |
| McCleery Elementary School | Aurora | 513 |
| McClellan Elementary School | Mount Vernon | 56 |
| McClernand Elementary School | Springfield | 213 |
| McClure Junior High School | Western Springs | 469 |
| McCormick Elementary School | Chicago | 502 |
| McCutcheon Elementary School | Chicago | 326 |
| McDade Elementary Classical School | Chicago | 207 |
| McDowell Elementary School | Chicago | 112 |
| McElvain School | Murphysboro | 64 |
| McGaughey Elementary School | Mount Zion | 371 |
| McHenry Community High School | Mchenry | 2,214 |
| McHenry Middle School | McHenry | 695 |
| McIntosh Elementary | Rockford | 398 |
| McKay Elementary School | Chicago | 616 |
| McKenzie Elementary School | Wilmette | 461 |
| McKinley Elementary School | Bellwood | 304 |
| McKinley Elementary School | Elgin | 395 |
| McKinley Elementary School | Ottawa | 364 |
| McKinley Elementary School | South Holland | 176 |
| McKinley Junior High School | South Holland | 287 |
| McNair Elementary School | Chicago | 328 |
| McPherson Elementary School | Chicago | 794 |
| Meade Park Elementary School | Danville | 312 |
| Meadow Glens Elementary School | Naperville | 475 |
| Meadow Lane School | Merrionette Park | 197 |
| Meadow Ridge School | Orland Park | 554 |
| Meadow View Elementary School | Plainfield | 627 |
| Meadowbrook Elementary School | Northbrook | 497 |