| Holliday ISD | Holliday | 1,120 |
| Hondo ISD | Hondo | 1,727 |
| Honey Grove ISD | Honey Grove | 651 |
| Hooks ISD | Hooks | 914 |
| Horizon Montessori Public Schools | Weslaco | 1,164 |
| Houston Classical Charter School | Houston | 342 |
| Houston Gateway Academy Inc | Houston | 2,157 |
| Houston Heights High School | Houston | 192 |
| Houston ISD | Houston | 176,727 |
| Howe ISD | Howe | 1,265 |
| Hubbard ISD | Dekalb | 64 |
| Hubbard ISD | Hubbard | 417 |
| Huckabay ISD | Stephenville | 327 |
| Hudson ISD | Lufkin | 2,777 |
| Huffman ISD | Huffman | 3,646 |
| Hughes Springs ISD | Hughes Springs | 1,090 |
| Hull-Daisetta ISD | Daisetta | 429 |
| Humble ISD | Humble | 48,502 |
| Hunt ISD | Hunt | 196 |
| Huntington ISD | Huntington | 1,564 |
| Huntsville ISD | Huntsville | 10,960 |
| Hurst-Euless-Bedford ISD | Bedford | 23,262 |
| Hutto ISD | Hutto | 10,688 |
| Idalou ISD | Idalou | 995 |
| Idea Public Schools | Weslaco | 79,430 |
| Imagine International Academy of North Texas | McKinney | 1,445 |
| Imagine Lone Star International Academy | Plano | 270 |
| Industrial ISD | Vanderbilt | 1,156 |
| Ingleside ISD | Ingleside | 2,071 |
| Ingram ISD | Ingram | 1,351 |
| Inspire Academies | San Antonio | 805 |
| Inspired Vision Academy | Dallas | 1,136 |
| International Leadership of Texas (Iltexas) | Richardson | 25,497 |
| Iola ISD | Iola | 626 |
| Iowa Park CISD | Iowa Park | 1,904 |
| Ira ISD | Ira | 284 |
| Iraan-Sheffield Collegiate ISD | Iraan | 333 |
| Iredell ISD | Iredell | 144 |
| Irion County ISD | Mertzon | 334 |
| Irving ISD | Irving | 30,767 |
| Italy ISD | Italy | 597 |
| Itasca ISD | Itasca | 638 |
| Jacksboro ISD | Jacksboro | 1,022 |
| Jacksonville ISD | Jacksonville | 4,700 |
| Jarrell ISD | Jarrell | 4,157 |
| Jasper ISD | Jasper | 2,070 |
| Jayton-Girard ISD | Jayton | 169 |
| Jean Massieu Academy | Arlington | 185 |
| Jefferson ISD | Jefferson | 1,125 |
| Jim Hogg County ISD | Hebbronville | 967 |
| Jim Ned CISD | Tuscola | 1,639 |
| Joaquin ISD | Joaquin | 720 |
| Johnson City ISD | Johnson City | 707 |
| Jonesboro ISD | Jonesboro | 337 |
| Joshua ISD | Joshua | 6,026 |
| Jourdanton ISD | Jourdanton | 1,554 |
| Jubilee Academies | San Antonio | 5,140 |
| Judson ISD | San Antonio | 23,539 |
| Junction ISD | Junction | 589 |
| Karnack ISD | Karnack | 119 |
| Karnes City ISD | Karnes City | 1,021 |
| Katherine Anne Porter School | Wimberley | 95 |
| Katy ISD | Katy | 96,111 |
| Kaufman ISD | Kaufman | 4,356 |
| Keene ISD | Keene | 1,119 |
| Keller ISD | Keller | 32,042 |
| Kelton ISD | Wheeler | 129 |
| Kemp ISD | Kemp | 1,987 |
| Kenedy County Wide CSD | Sarita | 126 |
| Kenedy ISD | Kenedy | 758 |
| Kennard ISD | Kennard | 275 |
| Kennedale ISD | Kennedale | 2,754 |
| Kerens ISD | Kerens | 657 |
| Kermit ISD | Kermit | 1,339 |
| Kerrville ISD | Kerrville | 4,600 |
| Ki Charter | San Marcos | 448 |
| Kilgore ISD | Kilgore | 3,660 |
| Killeen ISD | Killeen | 42,883 |
| Kingsville ISD | Kingsville | 2,534 |
| Kipp Texas Public Schools | Houston | 32,771 |
| Kirbyville CISD | Kirbyville | 1,439 |
| Klein ISD | Klein | 52,437 |
| Klondike ISD | Lamesa | 261 |
| Knippa ISD | Knippa | 408 |
| Knox City-O'brien CISD | Knox City | 195 |
| Kopperl ISD | Kopperl | 191 |
| Kountze ISD | Kountze | 1,151 |
| Kress ISD | Kress | 262 |
| Krum ISD | Krum | 2,542 |
| LA Academia DE Estrellas | Dallas | 1,024 |
| LA Fe Preparatory School | El Paso | 195 |
| LA Feria ISD | La Feria | 2,842 |
| LA Gloria ISD | Falurrias | 119 |
| LA Grange ISD | La Grange | 1,870 |
| LA Joya ISD | La Joya | 22,942 |
| LA Porte ISD | La Porte | 7,099 |
| LA Pryor ISD | La Pryor | 439 |
| LA Vega ISD | Waco | 3,093 |
| LA Vernia ISD | La Vernia | 3,563 |
| LA Villa ISD | La Villa | 512 |
| Lackland ISD | San Antonio | 1,010 |
| Lago Vista ISD | Lago Vista | 1,887 |
| Lake Dallas ISD | Lake Dallas | 3,717 |
| Lake Granbury Academy Charter School | Granbury | 47 |
| Lake Travis ISD | Austin | 11,008 |
| Lake Worth ISD | Lake Worth | 3,249 |
| Lamar CISD | Rosenberg | 46,786 |
| Lamesa ISD | Lamesa | 1,484 |
| Lampasas ISD | Lampasas | 3,640 |
| Lancaster ISD | Lancaster | 6,822 |
| Laneville ISD | Laneville | 139 |
| Lapoynor ISD | Larue | 479 |
| Laredo ISD | Laredo | 20,271 |
| Lasara ISD | Lasara | 343 |
| Latexo ISD | Latexo | 550 |
| Lazbuddie ISD | Lazbuddie | 127 |
| Leadership Prep School | Frisco | 1,391 |
| Leakey ISD | Leakey | 343 |
| Leander ISD | Leander | 42,608 |
| Leary ISD | Texarkana | 119 |
| Lefors ISD | Lefors | 173 |
| Legacy Preparatory | Mesquite | 1,138 |
| Legacy School of Sport Sciences | Spring | 468 |
| Legacy Traditional Schools - Texas | San Antonio | 2,186 |
| Leggett ISD | Livingston | 227 |
| Leon ISD | Jewett | 758 |
| Leonard ISD | Leonard | 815 |
| Levelland ISD | Levelland | 2,575 |
| Leveretts Chapel ISD | Overton | 242 |
| Lewisville ISD | Lewisville | 47,876 |
| Lexington ISD | Lexington | 1,052 |
| Liberty Hill ISD | Liberty Hill | 9,836 |
| Liberty ISD | Liberty | 2,438 |
| Liberty-Eylau ISD | Texarkana | 1,937 |
| Life School | Red Oak | 5,735 |
| Lighthouse Public Schools | San Antonio | 462 |
| Lindale ISD | Lindale | 4,606 |
| Linden-Kildare CISD | Linden | 617 |
| Lindsay ISD | Lindsay | 507 |
| Lingleville ISD | Lingleville | 270 |
| Lipan ISD | Lipan | 478 |
| Little Cypress-Mauriceville CISD | Orange | 3,320 |
| Little Elm ISD | Little Elm | 8,036 |
| Littlefield ISD | Littlefield | 1,233 |
| Livingston ISD | Livingston | 4,016 |
| Llano ISD | Llano | 1,968 |
| Lockhart ISD | Lockhart | 6,753 |
| Lockney ISD | Lockney | 391 |
| Lohn ISD | Lohn | 123 |
| Lometa ISD | Lometa | 316 |
| London ISD | Corpus Christi | 1,808 |
| Lone Oak ISD | Lone Oak | 1,137 |
| Lone Star School District | Austin | 756 |
| Longview ISD | Longview | 8,138 |
| Loop ISD | Loop | 150 |
| Loraine ISD | Loraine | 141 |
| Lorena ISD | Lorena | 1,817 |
| Lorenzo ISD | Lorenzo | 207 |
| Los Fresnos CISD | Los Fresnos | 10,357 |
| Louise ISD | Louise | 535 |
| Lovejoy ISD | Allen | 4,019 |
| Lovelady ISD | Lovelady | 515 |
| Lubbock ISD | Lubbock | 24,133 |
| Lubbock-Cooper ISD | Lubbock | 8,030 |
| Lueders-Avoca ISD | Lueders | 88 |
| Lufkin ISD | Lufkin | 6,865 |
| Luling ISD | Luling | 1,443 |
| Lumberton ISD | Lumberton | 4,108 |
| Lyford CISD | Lyford | 1,396 |
| Lytle ISD | Lytle | 1,825 |
| Mabank ISD | Mabank | 4,118 |
| Madisonville CISD | Madisonville | 2,377 |
| Magnolia ISD | Magnolia | 14,916 |
| Malakoff ISD | Malakoff | 1,511 |
| Malone ISD | Malone | 63 |
| Malta ISD | New Boston | 223 |
| Manara Academy | Irving | 671 |
| Manor ISD | Manor | 9,961 |
| Mansfield ISD | Mansfield | 35,354 |
| Marathon ISD | Marathon | 58 |
| Marble Falls ISD | Marble Falls | 4,001 |
| Marfa ISD | Marfa | 194 |
| Marion ISD | Marion | 1,709 |
| Marlin ISD | Marlin | 843 |
| Marshall ISD | Marshall | 4,957 |
| Mart ISD | Mart | 605 |
| Martins Mill ISD | Martin's Mill | 496 |
| Martinsville ISD | Nacogdoches | 313 |
| Mason ISD | Mason | 700 |
| Matagorda ISD | Matagorda | 109 |
| Mathis ISD | Mathis | 1,429 |
| Maud ISD | Maud | 450 |
| May ISD | May | 243 |
| Maypearl ISD | Maypearl | 1,209 |
| McAllen ISD | McAllen | 19,890 |
| McCamey ISD | McCamey | 484 |
| McDade ISD | McDade | 377 |
| McGregor ISD | McGregor | 1,495 |
| McKinney ISD | McKinney | 23,296 |
| McLean ISD | McLean | 182 |
| McLeod ISD | McLeod | 424 |
| McMullen County ISD | Tilden | 280 |
| Meadow ISD | Meadow | 230 |
| Meadowland Charter District | Boerne | 45 |
| Medina ISD | Medina | 243 |
| Medina Valley ISD | Castroville | 9,638 |
| Melissa ISD | Melissa | 7,735 |
| Memphis ISD | Memphis | 345 |
| Menard ISD | Menard | 264 |
| Mercedes ISD | Mercedes | 4,207 |
| Meridian ISD | Meridian | 382 |
| Meridian World School LLC | Round Rock | 1,745 |
| Merkel ISD | Merkel | 1,090 |
| Mesquite ISD | Mesquite | 37,930 |
| Mexia ISD | Mexia | 1,846 |
| Meyerpark Charter | Houston | 296 |
| Meyersville ISD | Meyersville | 176 |
| Miami ISD | Miami | 177 |
| Midland Academy Charter School | Midland | 421 |
| Midland ISD | Midland | 29,651 |
| Midlothian ISD | Midlothian | 11,356 |
| Midway ISD | Woodway | 8,824 |
| Midway ISD | Henrietta | 137 |
| Milano ISD | Milano | 423 |
| Mildred ISD | Corsicana | 838 |
| Miles ISD | Miles | 488 |
| Milford ISD | Milford | 258 |
| Miller Grove ISD | Cumby | 310 |
| Millsap ISD | Millsap | 1,083 |
| Mineola ISD | Mineola | 1,753 |
| Mineral Wells ISD | Mineral Wells | 3,303 |
| Mission CISD | Mission | 13,765 |
| Monahans-Wickett-Pyote ISD | Monahans | 2,181 |
| Montague ISD | Montague | 163 |
| Monte Alto ISD | Monte Alto | 819 |
| Montessori for All | Austin | 470 |
| Montgomery ISD | Montgomery | 9,889 |
| Moody ISD | Moody | 751 |
| Moran ISD | Moran | 115 |
| Morgan ISD | Morgan | 137 |
| Morgan Mill ISD | Stephenville | 127 |
| Morton ISD | Morton | 368 |
| Motley County ISD | Matador | 179 |
| Moulton ISD | Moulton | 293 |
| Mount Calm ISD | Mount Calm | 168 |
| Mount Enterprise ISD | Mount Enterprise | 501 |
| Mount Pleasant ISD | Mount Pleasant | 5,153 |
| Mount Vernon ISD | Mount Vernon | 1,608 |
| Muenster ISD | Muenster | 570 |
| Muleshoe ISD | Muleshoe | 1,330 |
| Mullin ISD | Mullin | 132 |
| Mumford ISD | Mumford | 598 |
| Munday CISD | Munday | 421 |
| Murchison ISD | Murchison | 169 |
| Nacogdoches ISD | Nacogdoches | 5,766 |
| Natalia ISD | Natalia | 1,315 |
| Navarro ISD | Seguin | 2,702 |
| Navasota ISD | Navasota | 3,117 |
| Nazareth ISD | Nazareth | 243 |
| Neches ISD | Palestine | 337 |
| Nederland ISD | Nederland | 5,317 |
| Needville ISD | Needville | 3,650 |
| New Boston ISD | New Boston | 1,108 |
| New Braunfels ISD | New Braunfels | 9,893 |
| New Caney ISD | New Caney | 19,420 |
| New Deal ISD | New Deal | 731 |
| New Diana ISD | Diana | 1,136 |
| New Frontiers Public Schools Inc | San Antonio | 303 |
| New Heights | Fort Worth | 588 |
| New Home ISD | New Home | 708 |
| New Summerfield ISD | New Summerfield | 526 |
| New Waverly ISD | New Waverly | 1,074 |
| Newcastle ISD | Newcastle | 227 |
| Newman International Academy of Arlington | Arlington | 2,830 |
| Newton ISD | Newton | 934 |
| Nixon-Smiley CISD | Nixon | 1,016 |
| Nocona ISD | Nocona | 785 |
| Nordheim ISD | Nordheim | 116 |
| Normangee ISD | Normangee | 661 |
| North East ISD | San Antonio | 56,420 |
| North Hopkins ISD | Sulphur Springs | 495 |
| North Lamar ISD | Paris | 2,395 |
| North Texas Collegiate Academy | Denton | 809 |
| North Zulch ISD | North Zulch | 333 |
| Northside ISD | Vernon | 227 |
| Northside ISD | San Antonio | 100,208 |
| Northwest ISD | Justin | 32,098 |
| Nova Academy | Dallas | 77 |
| Nova Academy Southeast | Dallas | 235 |
| Nueces Canyon CISD | Barksdale | 240 |
| Nursery ISD | Victoria | 156 |
| Nyos Charter School | Austin | 1,667 |
| O'donnell ISD | O'donnell | 253 |
| Oakwood ISD | Oakwood | 203 |
| Odem-Edroy ISD | Odem | 927 |
| Odyssey Academy Inc | Texas City | 1,681 |
| Oglesby ISD | Oglesby | 237 |
| Olfen ISD | Rowena | 145 |
| Olney ISD | Olney | 691 |
| Olton ISD | Olton | 612 |
| Onalaska ISD | Onalaska | 1,196 |
| Orange Grove ISD | Orange Grove | 1,648 |
| Orangefield ISD | Orangefield | 1,781 |
| Ore City ISD | Ore City | 788 |
| Orenda Charter School | Georgetown | 1,984 |
| Overton ISD | Overton | 523 |
| Paducah ISD | Paducah | 156 |
| Paint Creek ISD | Haskell | 111 |
| Paint Rock ISD | Paint Rock | 299 |
| Palacios ISD | Palacios | 1,265 |
| Palestine ISD | Palestine | 3,186 |
| Palmer ISD | Palmer | 1,352 |
| Palo Pinto ISD | Palo Pinto | 94 |
| Pampa ISD | Pampa | 3,141 |
| Panhandle ISD | Panhandle | 620 |
| Panola Charter School | Carthage | 184 |
| Panther Creek CISD | Valera | 163 |
| Paradise ISD | Paradise | 1,331 |
| Paris ISD | Paris | 3,832 |
| Pasadena ISD | Pasadena | 46,491 |
| Patton Springs ISD | Afton | 88 |
| Pawnee ISD | Pawnee | 630 |
| Pearland ISD | Pearland | 20,862 |
| Pearsall ISD | Pearsall | 1,953 |
| Peaster ISD | Weatherford | 1,776 |
| Pecos-Barstow-Toyah ISD | Pecos | 2,919 |
| Pegasus School of Liberal Arts and Sciences | Dallas | 348 |
| Penelope ISD | Penelope | 216 |
| Perrin-Whitt CISD | Perrin | 324 |
| Perryton ISD | Perryton | 1,802 |
| Petersburg ISD | Petersburg | 243 |
| Petrolia CISD | Petrolia | 510 |
| Pettus ISD | Pettus | 377 |
| Pewitt CISD | Omaha | 853 |
| Pflugerville ISD | Pflugerville | 25,477 |
| Pharr-San Juan-Alamo ISD | Pharr | 29,613 |
| Pilot Point ISD | Pilot Point | 1,619 |
| Pine Tree ISD | Longview | 4,439 |
| Pineywoods Community Academy | Lufkin | 1,061 |
| Pioneer Technology & Arts Academy | Dallas | 2,328 |
| Pittsburg ISD | Pittsburg | 2,245 |
| Plains ISD | Plains | 423 |
| Plainview ISD | Plainview | 4,077 |
| Plano ISD | Plano | 46,612 |
| Pleasant Grove ISD | Texarkana | 2,366 |
| Pleasanton ISD | Pleasanton | 3,406 |
| Plemons-Stinnett-Phillips CISD | Stinnett | 565 |
| Point Isabel ISD | Port Isabel | 1,786 |
| Ponder ISD | Ponder | 1,719 |
| Poolville ISD | Poolville | 797 |
| Por Vida Academy | San Antonio | 175 |
| Port Aransas ISD | Port Aransas | 585 |
| Port Arthur ISD | Port Arthur | 8,041 |
| Port Neches-Groves ISD | Port Neches | 5,349 |
| Positive Solutions Charter School | San Antonio | 93 |
| Post ISD | Post | 686 |
| Poteet ISD | Poteet | 1,837 |
| Poth ISD | Poth | 962 |
| Pottsboro ISD | Pottsboro | 1,453 |
| Prairie Lea ISD | Prairie Lea | 267 |
| Prairie Valley ISD | Nocona | 135 |
| Prairiland ISD | Pattonville | 1,105 |
| Prelude Preparatory Charter School | San Antonio | 162 |
| Premier High Schools | Lewisville | 7,948 |
| Premont ISD | Premont | 794 |
| Presidio ISD | Presidio | 1,085 |
| Priddy ISD | Priddy | 119 |
| Princeton ISD | Princeton | 9,956 |
| Pringle-Morse CISD | Morse | 128 |
| Priority Charter Schools | Morgans Point Resort | 504 |
| Progreso ISD | Progreso | 1,339 |
| Promesa Academy Charter School | San Antonio | 248 |
| Prosper ISD | Prosper | 31,651 |
| Quanah ISD | Quanah | 434 |
| Queen City ISD | Queen City | 867 |
| Quinlan ISD | Quinlan | 2,936 |
| Quitman ISD | Quitman | 1,208 |
| Rains ISD | Emory | 1,712 |
| Ralls ISD | Ralls | 370 |
| Ramirez CSD | Realitos | 36 |
| Ranch Academy | Canton | 64 |
| Randolph Field ISD | Randolph A F B | 1,427 |
| Ranger ISD | Ranger | 288 |
| Rankin ISD | Rankin | 301 |
| Rapoport Academy Public School | Waco | 898 |
| Raul Yzaguirre Schools for Success | Houston | 1,991 |
| Raven School | New Waverly | 42 |
| Raymondville ISD | Raymondville | 1,963 |
| Reagan County ISD | Big Lake | 855 |
| Red Lick ISD | Texarkana | 504 |
| Red Oak ISD | Red Oak | 6,696 |
| Redwater ISD | Texarkana | 1,103 |
| Refugio ISD | Refugio | 656 |
| Reg 1 Education Service Center | Edinburg | |
| Reg 10 Education Service Center | Richardson | |
| Reg 11 Education Service Center | White Settlement | |
| Reg 12 Education Service Center | Waco | |
| Reg 13 Education Service Center | Austin | |
| Reg 14 Education Service Center | Abilene | |
| Reg 15 Education Service Center | San Angelo | |
| Reg 16 Education Service Center | Amarillo | |
| Reg 17 Education Service Center | Lubbock | |
| Reg 18 Education Service Center | Midland | |
| Reg 19 Education Service Center | El Paso | |
| Reg 2 Education Service Center | Corpus Christi | |
| Reg 20 Education Service Center | San Antonio | |
| Reg 3 Education Service Center | Victoria | |
| Reg 4 Education Service Center | Houston | |
| Reg 5 Education Service Center | Beaumont | |
| Reg 6 Education Service Center | Huntsville | |
| Reg 7 Education Service Center | Kilgore | |
| Reg 8 Education Service Center | Pittsburg | |
| Reg 9 Education Service Center | Wichita Falls | |
| Reve Preparatory Charter School | Houston | 237 |
| Ricardo ISD | Kingsville | 659 |
| Rice CISD | Altair | 1,306 |
| Rice ISD | Rice | 1,105 |
| Richard Milburn Alter High School (Killeen) | San Antonio | 1,607 |
| Richards ISD | Richards | 249 |
| Richardson ISD | Richardson | 36,971 |
| Richland Collegiate High School | Dallas | 132 |
| Richland Springs ISD | Richland Springs | 120 |
| Riesel ISD | Riesel | 689 |
| Rio Grande City Grulla ISD | Rio Grande City | 9,316 |
| Rio Hondo ISD | Rio Hondo | 1,437 |
| Rio Vista ISD | Rio Vista | 1,032 |
| Rise Academy | Lubbock | 307 |
| Rising Star ISD | Rising Star | 181 |
| River Road ISD | Amarillo | 1,221 |
| Rivercrest ISD | Bogata | 684 |
| Riviera ISD | Riviera | 425 |
| Robert Lee ISD | Robert Lee | 269 |
| Robinson ISD | Robinson | 2,378 |
| Robstown ISD | Robstown | 2,570 |
| Roby CISD | Roby | 297 |
| Rochelle ISD | Rochelle | 160 |
| Rockdale ISD | Rockdale | 1,482 |
| Rocketship Public Schools | Fort Worth | 731 |
| Rockport-Fulton ISD | Rockport | 2,913 |
| Rocksprings ISD | Rocksprings | 200 |
| Rockwall ISD | Rockwall | 19,235 |
| Rogers ISD | Rogers | 893 |
| Roma ISD | Roma | 6,019 |
| Roosevelt ISD | Lubbock | 1,138 |
| Ropes ISD | Ropesville | 622 |
| Roscoe Collegiate ISD | Roscoe | 12,256 |
| Rosebud-Lott ISD | Lott | 790 |
| Rotan ISD | Rotan | 273 |
| Round Rock ISD | Round Rock | 46,954 |
| Round Top-Carmine ISD | Round Top | 235 |
| Royal ISD | Pattison | 2,884 |
| Royal Public Schools | San Antonio | 469 |
| Royse City ISD | Royse City | 10,034 |
| Rule ISD | Rule | 138 |
| Runge ISD | Runge | 162 |
| Rusk ISD | Rusk | 2,057 |
| S and S CISD | Sadler | 944 |
| Sabinal ISD | Sabinal | 462 |
| Sabine ISD | Gladewater | 1,583 |
| Sabine Pass ISD | Sabine Pass | 372 |
| Saint Jo ISD | Saint Jo | 326 |
| Salado ISD | Salado | 2,429 |
| Saltillo ISD | Saltillo | 250 |
| Sam Houston State University Charter School | Spring | 437 |
| Sam Rayburn ISD | Ivanhoe | 469 |
| San Angelo ISD | San Angelo | 13,004 |
| San Antonio ISD | San Antonio | 44,047 |
| San Antonio Steam Academy | San Antonio | 139 |
| San Augustine ISD | San Augustine | 597 |
| San Benito CISD | San Benito | 9,073 |
| San Diego ISD | San Diego | 1,453 |
| San Elizario ISD | San Elizario | 2,927 |
| San Felipe-Del Rio CISD | Del Rio | 9,767 |
| San Isidro ISD | San Isidro | 153 |
| San Marcos CISD | San Marcos | 8,222 |
| San Perlita ISD | San Perlita | 187 |
| San Saba ISD | San Saba | 738 |
| San Vicente ISD | Big Bend National Park | 9 |
| Sands CISD | Ackerly | 232 |
| Sanford-Fritch ISD | Fritch | 745 |
| Sanger ISD | Sanger | 2,880 |
| Santa Anna ISD | Santa Anna | 259 |
| Santa Fe ISD | Santa Fe | 4,310 |
| Santa Gertrudis ISD | Kingsville | 826 |
| Santa Maria ISD | Santa Maria | 512 |
| Santa Rosa ISD | Santa Rosa | 874 |
| Santo ISD | Santo | 582 |
| Savoy ISD | Savoy | 305 |
| Schertz-Cibolo-U City ISD | Schertz | 14,947 |
| Schleicher ISD | Eldorado | 415 |
| School of Science and Technology | San Antonio | 5,602 |
| School of Science and Technology Discovery | San Antonio | 6,084 |
| Schulenburg ISD | Schulenburg | 684 |
| Scurry-Rosser ISD | Scurry | 1,032 |
| Seagraves ISD | Seagraves | 525 |
| Sealy ISD | Sealy | 3,109 |
| Seashore Charter Schools | Corpus Christi | 405 |
| Seguin ISD | Seguin | 7,290 |
| Seminole ISD | Seminole | 3,089 |
| Ser-Ninos Charter School | Houston | 1,193 |