Granada Hills Charter High School had the most 11th-grade students enrolled in California with 1,195.
According to the National Center for Education Services, California is expected to see public and secondary school enrollment decrease three percent from 2017-2029. The state expected to see the largest drop in enrollment is New Mexico with a projected 12 percent decrease, while Washington D.C. is expected to see a 14 percent increase over the same time period.
In a survey conducted by the Public Policy Institute of California, seven percent of respondents said large class sizes was the biggest issue facing California's K-12 schools. In the same survey, 50 percent of the respondents said they did not view the financial resources their local public school was getting as adequate.
| Rank | School | Attendance | 
|---|---|---|
| 1 | Granada Hills Charter High School | 1,195 | 
| 2 | Eleanor Roosevelt High School | 1,168 | 
| 3 | Downey High School | 1,108 | 
| 4 | Central High East Campus | 1,022 | 
| 5 | Polytechnic High School | 1,007 | 
| 6 | Paramount High School | 995 | 
| 7 | Santiago High School | 977 | 
| 8 | Visions In Education | 969 | 
| 9 | Vista Murrieta High School | 930 | 
| 10 | San Marcos High School | 929 | 
| 11 | Rancho Cucamonga High School | 920 | 
| 12 | El Camino Real Charter High School | 913 | 
| 13 | Wilson High School | 892 | 
| 14 | Etiwanda High School | 891 | 
| 15 | Fountain Valley High School | 885 | 
| 16 | Earl Warren High School | 866 | 
| 17 | Dougherty Valley High School | 861 | 
| 18 | Assurance Learning Academy | 857 | 
| 19 | Pittsburg Senior High School | 851 | 
| 20 | Millikan High School | 849 | 
| 21 | Madera South High School | 847 | 
| 22 | James Logan High School | 844 | 
| 23 | Upland High School | 822 | 
| 23 | Berkeley High School | 822 | 
| 25 | Lakewood High School | 803 | 
| 26 | Chaffey High School | 802 | 
| 27 | Santa Ana High School | 799 | 
| 28 | Birmingham Community Charter High School | 797 | 
| 29 | Opportunities for Learning - Baldwin Park | 791 | 
| 29 | Great Oak High School | 791 | 
| 29 | Pioneer Valley High School | 791 | 
| 32 | Sanger High School | 784 | 
| 33 | Alisal High School | 783 | 
| 34 | Dublin High School | 778 | 
| 35 | Los Alamitos High School | 775 | 
| 36 | Martin Luther King Jr. High School | 773 | 
| 37 | Pacifica High School | 772 | 
| 38 | Calexico High School | 767 | 
| 39 | Evergreen Valley High School | 766 | 
| 40 | Milpitas High School | 763 | 
| 41 | Santa Maria High School | 761 | 
| 42 | San Benito High School | 760 | 
| 43 | Paloma Valley High School | 752 | 
| 44 | Huntington Beach High School | 751 | 
| 45 | Arnold O. Beckman High School | 747 | 
| 46 | Sweetwater High School | 745 | 
| 46 | Chaparral High School | 745 | 
| 48 | Centennial High School | 744 | 
| 49 | Redondo Union High School | 735 | 
| 50 | Arcadia High School | 730 | 
| 51 | Valencia High School | 727 | 
| 52 | Heritage High School | 724 | 
| 53 | Temecula Valley High School | 723 | 
| 53 | San Juan Hills High School | 723 | 
| 55 | San Diego Workforce Innovation High School | 720 | 
| 56 | Lowell High School | 719 | 
| 56 | Los Osos High School | 719 | 
| 58 | Palisades Charter High School | 715 | 
| 59 | Cypress High School | 708 | 
| 60 | Chino Hills High School | 706 | 
| 60 | Trabuco Hills High School | 706 | 
| 60 | California High School | 706 | 
| 63 | Summit High School | 705 | 
| 63 | Heritage High School | 705 | 
| 65 | Franklin High School | 702 | 
| 65 | Aliso Niguel High School | 702 | 
| 67 | Santa Monica High School | 701 | 
| 68 | Sunnyside High School | 700 | 
| 69 | Quartz Hill High School | 699 | 
| 70 | Lincoln High School | 698 | 
| 70 | Montclair High School | 698 | 
| 70 | Golden Valley High School | 698 | 
| 73 | Beaumont Senior High School | 697 | 
| 73 | Schurr High School | 697 | 
| 75 | Yucaipa High School | 695 | 
| 76 | Grover Cleveland Charter High School | 691 | 
| 77 | Katella High School | 687 | 
| 77 | California High School | 687 | 
| 79 | Amador Valley High School | 686 | 
| 80 | Liberty High School | 685 | 
| 81 | San Leandro High School | 683 | 
| 82 | Ridgeview High School | 681 | 
| 83 | Clovis High School | 677 | 
| 84 | Eastlake High School | 675 | 
| 85 | Clovis East High School | 673 | 
| 86 | Independence High School | 672 | 
| 86 | Buchanan High School | 672 | 
| 88 | Anaheim High School | 671 | 
| 89 | Lancaster High School | 670 | 
| 89 | Del Norte High School | 670 | 
| 89 | Mission Hills High School | 670 | 
| 92 | Bakersfield High School | 668 | 
| 93 | Cajon High School | 667 | 
| 94 | William J. (Pete) Knight High School | 665 | 
| 95 | Sheldon High School | 664 | 
| 96 | San Clemente High School | 663 | 
| 97 | Clovis North High School | 662 | 
| 98 | American High School | 661 | 
| 99 | El Camino High School | 660 | 
| 100 | Salinas High School | 658 | 
| 101 | Ruben S. Ayala High School | 656 | 
| 102 | Mira Monte High School | 655 | 
| 103 | Channel Islands High School | 654 | 
| 104 | Westminster High School | 653 | 
| 105 | Crescenta Valley High School | 651 | 
| 106 | Valencia High School | 650 | 
| 107 | John F. Kennedy High School | 648 | 
| 108 | Valley View High School | 645 | 
| 109 | Patriot High School | 644 | 
| 110 | Coachella Valley High School | 643 | 
| 111 | Troy High School | 642 | 
| 111 | Edison High School | 642 | 
| 113 | San Jacinto High School | 641 | 
| 114 | Saugus High School | 639 | 
| 114 | Segerstrom High School | 639 | 
| 116 | Alexander Hamilton Senior High School | 638 | 
| 117 | Silver Creek High School | 634 | 
| 117 | Highland High School | 634 | 
| 119 | Oxnard High School | 633 | 
| 119 | San Pedro Senior High School | 633 | 
| 121 | La Serna High School | 632 | 
| 121 | Pleasant Grove High School | 632 | 
| 123 | Folsom High School | 631 | 
| 124 | Sunny Hills High School | 629 | 
| 125 | Torrey Pines High School | 628 | 
| 125 | Diamond Bar High School | 628 | 
| 127 | Bell Gardens High School | 627 | 
| 128 | Rialto High School | 626 | 
| 128 | Arvin High School | 626 | 
| 130 | Edison High School | 624 | 
| 130 | Henry High School | 624 | 
| 132 | Freedom High School | 622 | 
| 133 | Ernest Righetti High School | 621 | 
| 133 | Burroughs High School | 621 | 
| 135 | La Quinta High School | 620 | 
| 136 | Burbank High School | 618 | 
| 136 | Eastside High School | 618 | 
| 138 | Oak Hills High School | 617 | 
| 139 | Monte Vista High School | 616 | 
| 139 | Canyon Crest Academy | 616 | 
| 141 | Arroyo Valley High School | 615 | 
| 141 | James A. Garfield Senior High School | 615 | 
| 143 | Oak Ridge High School | 612 | 
| 144 | Chula Vista Senior High School | 611 | 
| 145 | Redwood High School | 610 | 
| 146 | Homestead High School | 609 | 
| 146 | Marina High School | 609 | 
| 148 | Newbury Park High School | 608 | 
| 148 | Mira Mesa High School | 608 | 
| 150 | Helix High School | 607 | 
| 150 | Mira Costa High School | 607 | 
| 152 | West Ranch High School | 606 | 
| 153 | Castro Valley High School | 605 | 
| 154 | Murrieta Mesa High School | 604 | 
| 155 | Fontana High School | 603 | 
| 156 | Grossmont High School | 602 | 
| 156 | Otay Ranch Senior High School | 602 | 
| 158 | Turlock High School | 601 | 
| 158 | Tesoro High School | 601 | 
| 158 | Highland High School | 601 | 
| 161 | Tustin High School | 600 | 
| 161 | East Bakersfield High School | 600 | 
| 163 | Modesto High School | 599 | 
| 163 | Jordan High School | 599 | 
| 165 | San Ysidro High School | 598 | 
| 165 | Alta Loma High School | 598 | 
| 167 | Cesar Chavez High School | 597 | 
| 168 | Phineas Banning Senior High School | 594 | 
| 169 | Edison High School | 592 | 
| 169 | Alternative Education-San Joaquin High School | 592 | 
| 171 | North Hollywood Senior High School | 591 | 
| 172 | Claremont High School | 590 | 
| 173 | Watsonville High School | 589 | 
| 173 | Polytechnic High School | 589 | 
| 173 | Foothill High School | 589 | 
| 173 | Mark Keppel High School | 589 | 
| 173 | Joseph A. Gregori High School | 589 | 
| 178 | Davis Senior High School | 588 | 
| 178 | Hueneme High School | 588 | 
| 178 | Palmdale High School | 588 | 
| 178 | Orange Vista High School | 588 | 
| 182 | John H. Francis Polytechnic High School | 587 | 
| 182 | Bullard High School | 587 | 
| 182 | Irvington High School | 587 | 
| 185 | Menlo-Atherton High School | 586 | 
| 185 | Stockdale High School | 586 | 
| 187 | Ontario High School | 585 | 
| 188 | Taft Charter High School | 584 | 
| 189 | Norte Vista High School | 582 | 
| 189 | Olympian High School | 582 | 
| 191 | Palos Verdes Peninsula High School | 581 | 
| 192 | Cupertino High School | 580 | 
| 193 | Carlmont High School | 579 | 
| 193 | Vista High School | 579 | 
| 195 | Van Nuys Senior High School | 578 | 
| 195 | Clayton Valley Charter High School | 578 | 
| 195 | Hector G. Godinez School | 578 | 
| 198 | Granada High School | 576 | 
| 199 | Mountain View High School | 575 | 
| 199 | Bell Senior High School | 575 | 

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