| Los Angeles Unified | Los Angeles | K–12 | 408,026 |
| San Diego Unified | San Diego | K–12 | 95,175 |
| Fresno Unified | Fresno | K–12 | 68,131 |
| Elk Grove Unified | Elk Grove | K–12 | 63,421 |
| Long Beach Unified | Long Beach | K–12 | 62,644 |
| Corona-Norco Unified | Norco | K–12 | 49,487 |
| San Francisco Unified | San Francisco | K–12 | 48,902 |
| San Bernardino City Unified | San Bernardino | K–12 | 44,192 |
| Clovis Unified | Clovis | K–12 | 43,669 |
| Kern High | Bakersfield | K–12 | 43,237 |
| Capistrano Unified | San Juan Capistrano | K–12 | 40,358 |
| San Juan Unified | Carmichael | K–12 | 39,446 |
| Riverside Unified | Riverside | K–12 | 38,033 |
| Irvine Unified | Irvine | K–12 | 38,028 |
| Sacramento City Unified | Sacramento | K–12 | 37,913 |
| Garden Grove Unified | Garden Grove | K–12 | 37,009 |
| Santa Ana Unified | Santa Ana | K–12 | 36,036 |
| Poway Unified | San Diego | K–12 | 34,405 |
| Sweetwater Union High | Chula Vista | K–12 | 34,282 |
| Oakland Unified | Oakland | K–12 | 33,838 |
| Stockton Unified | Stockton | K–12 | 33,648 |
| Fremont Unified | Fremont | K–12 | 33,134 |
| Fontana Unified | Fontana | K–12 | 32,794 |
| Moreno Valley Unified | Moreno Valley | K–12 | 30,926 |
| Mt. Diablo Unified | Concord | K–12 | 29,494 |
| Visalia Unified | Visalia | K–12 | 28,809 |
| San Ramon Valley Unified | Danville | K–12 | 28,615 |
| Bakersfield City | Bakersfield | K–8 | 28,365 |
| Lodi Unified | Lodi | K–12 | 27,109 |
| Temecula Valley Unified | Temecula | K–12 | 26,298 |
| Anaheim Union High | Anaheim | 7–12 | 26,120 |
| Desert Sands Unified | La Quinta | K–12 | 25,615 |
| Chino Valley Unified | Chino | K–12 | 25,579 |
| Glendale Unified | Glendale | K–12 | 25,329 |
| Manteca Unified | Manteca | K–12 | 25,248 |
| West Contra Costa Unified | Richmond | K–12 | 25,244 |
| Twin Rivers Unified | Mcclellan | K–12 | 24,849 |
| San Jose Unified | San Jose | K–12 | 24,453 |
| Orange Unified | Orange | K–12 | 23,823 |
| Hesperia Unified | Hesperia | K–12 | 23,209 |
| Rialto Unified | Rialto | K–12 | 23,073 |
| Hemet Unified | Hemet | K–12 | 22,891 |
| Placentia-Yorba Linda Unified | Placentia | K–12 | 22,698 |
| Saddleback Valley Unified | Mission Viejo | K–12 | 22,691 |
| Downey Unified | Downey | K–12 | 22,462 |
| Chula Vista Elementary | Chula Vista | K–12 | 22,245 |
| Chaffey Joint Union High | Ontario | 9–12 | 22,116 |
| Torrance Unified | Torrance | K–12 | 22,023 |
| Folsom-Cordova Unified | Rancho Cordova | K–12 | 21,780 |
| Murrieta Valley Unified | Murrieta | K–12 | 21,712 |
| Tustin Unified | Tustin | K–12 | 21,342 |
| Antelope Valley Union High | Lancaster | K–12 | 21,231 |
| Lake Elsinore Unified | Lake Elsinore | K–12 | 20,559 |
| William S. Hart Union High | Santa Clarita | K–12 | 20,493 |
| Pomona Unified | Pomona | K–12 | 20,475 |
| Fairfield-Suisun Unified | Fairfield | K–12 | 20,359 |
| Palm Springs Unified | Palm Springs | K–12 | 20,008 |
| East Side Union High | San Jose | K–12 | 20,001 |
| Madera Unified | Madera | K–12 | 19,935 |
| Panama-Buena Vista Union | Bakersfield | K–8 | 19,366 |
| Redlands Unified | Redlands | K–12 | 19,310 |
| Montebello Unified | Montebello | K–12 | 19,195 |
| Val Verde Unified | Perris | K–12 | 19,080 |
| San Marcos Unified | San Marcos | K–12 | 18,860 |
| Colton Joint Unified | Colton | K–12 | 18,414 |
| Vista Unified | Vista | K–12 | 18,112 |
| Palmdale Elementary | Palmdale | K–12 | 17,941 |
| Jurupa Unified | Jurupa Valley | K–12 | 17,815 |
| Ontario-Montclair | Ontario | K–8 | 17,695 |
| Newport-Mesa Unified | Costa Mesa | K–12 | 17,635 |
| Abc Unified | Cerritos | K–12 | 17,612 |
| Santa Maria-Bonita | Santa Maria | K–8 | 17,408 |
| Hayward Unified | Hayward | K–12 | 17,377 |
| Pajaro Valley Unified | Watsonville | K–12 | 16,588 |
| Grossmont Union High | El Cajon | K–12 | 16,476 |
| Alvord Unified | Corona | K–12 | 16,466 |
| Compton Unified | Compton | K–12 | 16,436 |
| Napa Valley Unified | Napa | K–12 | 16,103 |
| Oxnard Union High | Oxnard | K–12 | 16,039 |
| Cajon Valley Union | El Cajon | K–12 | 15,992 |
| Central Unified | Fresno | K–12 | 15,962 |
| Coachella Valley Unified | Thermal | K–12 | 15,817 |
| Salinas Union High | Salinas | 7–12 | 15,813 |
| Conejo Valley Unified | Thousand Oaks | K–12 | 15,724 |
| Hacienda La Puente Unified | City of Industry | K–12 | 15,480 |
| Simi Valley Unified | Simi Valley | K–12 | 15,444 |
| Modesto City High | Modesto | 6–12 | 15,443 |
| Antioch Unified | Antioch | K–12 | 15,253 |
| Natomas Unified | Sacramento | K–12 | 14,923 |
| Oceanside Unified | Oceanside | K–12 | 14,890 |
| Alhambra Unified | Alhambra | K–12 | 14,597 |
| Norwalk-La Mirada Unified | Norwalk | K–12 | 14,577 |
| Modesto City Elementary | Modesto | K–12 | 14,461 |
| Santa Clara Unified | Santa Clara | K–12 | 14,448 |
| Ventura Unified | Ventura | K–12 | 14,379 |
| Burbank Unified | Burbank | K–12 | 14,168 |
| Walnut Valley Unified | Walnut | K–12 | 14,004 |
| Huntington Beach Union High | Huntington Beach | 9–12 | 13,982 |
| Escondido Union | Escondido | K–8 | 13,922 |
| Porterville Unified | Porterville | K–12 | 13,893 |
| Anaheim Elementary | Anaheim | K–6 | 13,838 |
| Tracy Joint Unified | Tracy | K–12 | 13,817 |
| Lancaster Elementary | Lancaster | K–8 | 13,769 |
| Pasadena Unified | Pasadena | K–12 | 13,757 |
| Ceres Unified | Ceres | K–12 | 13,692 |
| Etiwanda Elementary | Etiwanda | K–8 | 13,676 |
| Apple Valley Unified | Apple Valley | K–12 | 13,639 |
| Cupertino Union | Sunnyvale | K–8 | 13,533 |
| Turlock Unified | Turlock | K–12 | 13,488 |
| Pleasanton Unified | Pleasanton | K–12 | 13,338 |
| Sanger Unified | Sanger | K–12 | 13,313 |
| Oxnard | Oxnard | K–8 | 13,003 |
| Livermore Valley Joint Unified | Livermore | K–12 | 12,968 |
| Dublin Unified | Dublin | K–12 | 12,808 |
| Vacaville Unified | Vacaville | K–12 | 12,717 |
| Fullerton Joint Union High | Fullerton | 9–12 | 12,631 |
| Beaumont Unified | Beaumont | K–12 | 12,448 |
| Roseville City Elementary | Roseville | K–8 | 12,324 |
| Victor Elementary | Victorville | K–6 | 12,320 |
| Chico Unified | Chico | K–12 | 12,266 |
| Menifee Union | Menifee | K–12 | 12,253 |
| Santa Barbara Unified | Santa Barbara | K–12 | 12,250 |
| San Dieguito Union High | Encinitas | 7–12 | 12,055 |
| Perris Union High | Perris | 5–12 | 11,832 |
| Highlands Community Charter District | Sacramento | 1–12 | 11,713 |
| Paramount Unified | Paramount | K–12 | 11,648 |
| Rocklin Unified | Rocklin | K–12 | 11,598 |
| Victor Valley Union High | Victorville | 7–12 | 11,560 |
| Rowland Unified | Rowland Heights | K–12 | 11,558 |
| Yuba City Unified | Yuba City | K–12 | 11,401 |
| Fullerton Elementary | Fullerton | K–8 | 11,262 |
| Merced City Elementary | Merced | K–8 | 11,108 |
| Merced Union High | Atwater | 9–12 | 11,062 |
| Covina-Valley Unified | Covina | K–12 | 11,055 |
| Los Banos Unified | Los Banos | K–12 | 11,041 |
| Roseville Joint Union High | Roseville | K–12 | 11,002 |
| Lynwood Unified | Lynwood | K–12 | 10,900 |
| Carlsbad Unified | Carlsbad | K–12 | 10,708 |
| Pittsburg Unified | Pittsburg | K–12 | 10,666 |
| La Mesa-Spring Valley | La Mesa | K–8 | 10,460 |
| Marysville Joint Unified | Marysville | K–12 | 10,446 |
| San Jacinto Unified | San Jacinto | K–12 | 10,280 |
| Palo Alto Unified | Palo Alto | K–12 | 10,209 |
| Gilroy Unified | Gilroy | K–12 | 10,181 |
| Palos Verdes Peninsula Unified | Palos Verdes Estates | K–12 | 10,177 |
| Milpitas Unified | Milpitas | K–12 | 10,086 |
| New Haven Unified | Union City | K–12 | 10,069 |
| Brentwood Union | Brentwood | K–8 | 10,049 |
| Bonita Unified | San Dimas | K–12 | 9,944 |
| San Mateo-Foster City | Foster City | K–8 | 9,926 |
| Whittier Union High | Whittier | 9–12 | 9,846 |
| Las Virgenes Unified | Calabasas | K–12 | 9,767 |
| Kings Canyon Joint Unified | Reedley | K–12 | 9,696 |
| Vallejo City Unified | Vallejo | K–12 | 9,653 |
| Bellflower Unified | Bellflower | K–12 | 9,633 |
| Lucia Mar Unified | Arroyo Grande | K–12 | 9,591 |
| Castro Valley Unified | Castro Valley | K–12 | 9,570 |
| Santa Rosa High | Santa Rosa | K–12 | 9,546 |
| Upland Unified | Upland | K–12 | 9,496 |
| Redondo Beach Unified | Redondo Beach | K–12 | 9,470 |
| Fremont Union High | Sunnyvale | 9–12 | 9,457 |
| Woodland Joint Unified | Woodland | K–12 | 9,355 |
| Monterey Peninsula Unified | Monterey | K–12 | 9,350 |
| Baldwin Park Unified | Baldwin Park | K–12 | 9,346 |
| Tulare City | Tulare | K–8 | 9,294 |
| Alameda Unified | Alameda | K–12 | 9,292 |
| Saugus Union | Santa Clarita | K–6 | 9,191 |
| Berkeley Unified | Berkeley | K–12 | 9,162 |
| Westside Union Elementary | Quartz Hill | K–8 | 9,078 |
| Arcadia Unified | Arcadia | K–12 | 9,073 |
| Santa Maria Joint Union High | Santa Maria | 9–12 | 8,930 |
| Lompoc Unified | Lompoc | K–12 | 8,898 |
| San Leandro Unified | San Leandro | K–12 | 8,866 |
| Greenfield Union | Bakersfield | K–8 | 8,860 |
| San Mateo Union High | San Mateo | 9–12 | 8,775 |
| Lincoln Unified | Stockton | K–12 | 8,744 |
| Los Alamitos Unified | Los Alamitos | K–12 | 8,740 |
| Santa Monica-Malibu Unified | Santa Monica | K–12 | 8,623 |
| Oak Grove Elementary | San Jose | K–8 | 8,578 |
| Yucaipa-Calimesa Joint Unified | Yucaipa | K–12 | 8,524 |
| Sequoia Union High | Redwood City | 9–12 | 8,516 |
| Campbell Union High | San Jose | 9–12 | 8,514 |
| Evergreen Elementary | San Jose | K–8 | 8,474 |
| Davis Joint Unified | Davis | K–12 | 8,246 |
| Salinas City Elementary | Salinas | K–6 | 8,236 |
| Liberty Union High | Brentwood | 9–12 | 8,228 |
| Snowline Joint Unified | Phelan | K–12 | 8,085 |
| Western Placer Unified | Lincoln | K–12 | 8,052 |
| Calexico Unified | Calexico | K–12 | 8,022 |
| Sylvan Union Elementary | Modesto | K–8 | 7,977 |
| San Lorenzo Unified | San Lorenzo | K–12 | 7,957 |
| Lammersville Joint Unified | Mountain House | K–12 | 7,949 |
| Westminster | Westminster | K–8 | 7,870 |
| Morgan Hill Unified | Morgan Hill | K–12 | 7,829 |
| West Covina Unified | West Covina | K–12 | 7,715 |
| River Springs Charter District | Temecula | K–12 | 7,703 |
| Adelanto Elementary | Adelanto | K–12 | 7,669 |
| South San Francisco Unified | South San Francisco | K–12 | 7,664 |
| Blue Ridge Academy District | Maricopa | K–12 | 7,657 |
| San Luis Coastal Unified | San Luis Obispo | K–12 | 7,654 |
| East Whittier City Elementary | Whittier | K–8 | 7,524 |
| Washington Unified | West Sacramento | K–12 | 7,462 |
| Visions in Education District | Carmichael | K–12 | 7,460 |
| Alisal Union | Salinas | K–6 | 7,303 |
| El Monte Union High | El Monte | 9–12 | 7,295 |
| Alum Rock Union Elementary | San Jose | K–8 | 7,259 |
| Novato Unified | Novato | K–12 | 7,247 |
| Morongo Unified | Twentynine Palms | K–12 | 7,225 |
| El Monte City | El Monte | K–8 | 6,927 |
| Hawthorne | Hawthorne | K–12 | 6,908 |
| El Rancho Unified | Pico Rivera | K–12 | 6,878 |
| Dry Creek Joint Elementary | Roseville | K–8 | 6,801 |
| Pacific Coast Academy District | Poway | K–12 | 6,760 |
| Mission Vista Academy District | Beaumont | K–12 | 6,724 |
| Hueneme Elementary | Port Hueneme | K–8 | 6,685 |
| Ocean View | Huntington Beach | K–8 | 6,658 |
| Culver City Unified | Culver City | K–12 | 6,595 |
| Inglewood Unified | Inglewood | K–12 | 6,547 |
| El Dorado Union High | Placerville | 8–12 | 6,439 |
| Redwood City Elementary | Redwood City | K–8 | 6,394 |
| Glendora Unified | Glendora | K–12 | 6,376 |
| Cotati-Rohnert Park Unified | Rohnert Park | K–12 | 6,357 |
| Escondido Union High | Escondido | 6–12 | 6,334 |
| Paso Robles Joint Unified | Paso Robles | K–12 | 6,284 |
| Dinuba Unified | Dinuba | K–12 | 6,244 |
| Rosedale Union Elementary | Bakersfield | K–8 | 6,203 |
| Delano Union Elementary | Delano | K–8 | 6,185 |
| Claremont Unified | Claremont | K–12 | 6,133 |
| Barstow Unified | Barstow | K–12 | 6,128 |
| Campbell Union | Campbell | K–8 | 6,120 |
| Santee | Santee | K–8 | 6,076 |
| Patterson Joint Unified | Patterson | K–12 | 6,070 |
| Azusa Unified | Azusa | K–12 | 6,045 |
| Fountain Valley Elementary | Fountain Valley | K–8 | 6,022 |
| Newhall | Valencia | K–6 | 6,022 |
| Heartland Charter District | Maricopa | K–12 | 5,970 |
| Granada Hills Charter District | Granada Hills | K–12 | 5,927 |
| Selma Unified | Selma | K–12 | 5,914 |
| Berryessa Union Elementary | San Jose | K–8 | 5,911 |
| Hollister | Hollister | K–8 | 5,909 |
| Manhattan Beach Unified | Manhattan Beach | K–12 | 5,895 |
| Ukiah Unified | Ukiah | K–12 | 5,895 |
| Pleasant Valley | Camarillo | K–12 | 5,835 |
| Sunnyvale | Sunnyvale | K–8 | 5,764 |
| Brea-Olinda Unified | Brea | K–12 | 5,753 |
| Cabrillo Point Academy District | Poway | K–12 | 5,706 |
| California Virtual Academy @ Los Angeles District | Simi Valley | K–12 | 5,705 |
| Franklin-Mckinley Elementary | San Jose | K–8 | 5,675 |
| Moorpark Unified | Moorpark | K–12 | 5,605 |
| Tulare Joint Union High | Tulare | 9–12 | 5,598 |
| Alta Loma Elementary | Alta Loma | K–8 | 5,543 |
| Perris Elementary | Perris | K–8 | 5,522 |
| Hanford Elementary | Hanford | K–8 | 5,463 |
| South Bay Union | Imperial Beach | K–8 | 5,450 |
| Acalanes Union High | Lafayette | 9–12 | 5,425 |
| Travis Unified | Fairfield | K–12 | 5,405 |
| Union Elementary | San Jose | K–8 | 5,379 |
| Centinela Valley Union High | Lawndale | 9–12 | 5,370 |
| Temple City Unified | Temple City | K–12 | 5,298 |
| Whittier City | Whittier | K–8 | 5,291 |
| Kerman Unified | Kerman | K–12 | 5,273 |
| Rio Elementary | Oxnard | K–8 | 5,251 |
| El Centro Elementary | El Centro | K–8 | 5,157 |
| Sulphur Springs Union | Canyon Country | K–6 | 5,157 |
| Oakley Union Elementary | Oakley | K–8 | 5,131 |
| Oakdale Joint Unified | Oakdale | K–12 | 5,118 |
| Fallbrook Union Elementary | Fallbrook | K–8 | 5,042 |
| Sierra Sands Unified | Ridgecrest | K–12 | 4,974 |
| Petaluma Joint Union High | Petaluma | K–12 | 4,961 |
| Jefferson Elementary | Daly City | K–12 | 4,952 |
| Ramona City Unified | Ramona | K–12 | 4,949 |
| Atwater Elementary | Atwater | K–8 | 4,925 |
| Monrovia Unified | Monrovia | K–12 | 4,920 |
| Orcutt Union Elementary | Orcutt | K–12 | 4,911 |
| Santa Rosa Elementary | Santa Rosa | K–8 | 4,827 |
| Burton Elementary | Porterville | K–12 | 4,805 |
| Romoland Elementary | Homeland | K–8 | 4,800 |
| Imperial Unified | Imperial | K–12 | 4,795 |
| Magnolia Elementary | Anaheim | K–6 | 4,767 |
| Soledad Unified | Soledad | K–12 | 4,744 |
| Windsor Unified | Windsor | K–12 | 4,692 |
| South Pasadena Unified | South Pasadena | K–12 | 4,678 |
| Newark Unified | Newark | K–12 | 4,666 |
| Mountain View Whisman | Mountain View | K–8 | 4,644 |
| Center Joint Unified | Antelope | K–12 | 4,614 |
| Santa Paula Unified | Santa Paula | K–12 | 4,575 |
| Huntington Beach City Elementary | Huntington Beach | K–8 | 4,562 |
| Tamalpais Union High | Larkspur | 9–12 | 4,542 |
| Lakeside Union Elementary | Lakeside | K–12 | 4,515 |
| San Gabriel Unified | San Gabriel | K–12 | 4,492 |
| Santa Cruz City High | Santa Cruz | K–12 | 4,467 |
| Mountain View Elementary | El Monte | K–8 | 4,463 |
| Mountain View-Los Altos Union High | Mountain View | 9–12 | 4,459 |
| San Rafael City Elementary | San Rafael | K–8 | 4,439 |
| Oak Park Unified | Oak Park | K–12 | 4,437 |
| Coalinga-Huron Unified | Coalinga | K–12 | 4,418 |
| Granite Mountain Charter District | Lucerne Valley | K–12 | 4,393 |
| Atascadero Unified | Atascadero | K–12 | 4,357 |
| Benicia Unified | Benicia | K–12 | 4,346 |
| Lawndale Elementary | Lawndale | K–12 | 4,324 |