Granada Hills Charter High School had the most 11th-grade students enrolled in California with 1,218.
According to numbers provided by the National Center for Education Services, California is expected to see a decrease of three percent in public elementary and secondary school enrollment 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 projected 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 | 1,218 |
| 2 | Paramount High School | 1,196 |
| 3 | Eleanor Roosevelt High School | 1,048 |
| 4 | Central High East Campus | 1,026 |
| 5 | Polytechnic High School | 989 |
| 6 | Downey High School | 973 |
| 7 | Earl Warren High School | 924 |
| 8 | Assurance Learning Academy | 921 |
| 9 | Santiago High School | 914 |
| 10 | Fountain Valley High School | 894 |
| 11 | James Logan High School | 889 |
| 12 | Wilson High School | 887 |
| 13 | Pittsburg Senior High School | 882 |
| 14 | Etiwanda High School | 876 |
| 15 | El Camino Real Charter High School | 863 |
| 16 | Rancho Cucamonga High School | 862 |
| 16 | Millikan High School | 862 |
| 18 | Vista Murrieta High School | 858 |
| 19 | San Marcos High School | 835 |
| 20 | Opportunities for Learning - Baldwin Park | 829 |
| 21 | Upland High School | 822 |
| 22 | Dougherty Valley High School | 821 |
| 23 | Anaheim High School | 804 |
| 24 | Milpitas High School | 789 |
| 24 | Aliso Niguel High School | 789 |
| 26 | Arcadia High School | 788 |
| 27 | Berkeley High School | 779 |
| 28 | Centennial High School | 776 |
| 28 | Great Oak High School | 776 |
| 30 | Chaffey High School | 770 |
| 31 | Los Alamitos High School | 760 |
| 32 | Santa Ana High School | 758 |
| 33 | Pacifica High School | 752 |
| 34 | Westminster High School | 750 |
| 35 | Palisades Charter High School | 749 |
| 35 | Calexico High School | 749 |
| 35 | Madera South High School | 749 |
| 38 | Grover Cleveland Charter High School | 748 |
| 39 | Redondo Union High School | 746 |
| 40 | Paloma Valley High School | 744 |
| 40 | Birmingham Community Charter High School | 744 |
| 42 | Rialto High School | 739 |
| 42 | Lakewood High School | 739 |
| 44 | Los Osos High School | 736 |
| 45 | Huntington Beach High School | 727 |
| 46 | Sweetwater High School | 726 |
| 46 | San Diego Workforce Innovation High School | 726 |
| 48 | Visions In Education | 725 |
| 48 | Chaparral High School | 725 |
| 50 | Lincoln High School | 724 |
| 50 | Quartz Hill High School | 724 |
| 52 | Dublin High School | 721 |
| 53 | San Benito High School | 719 |
| 53 | Diamond Bar High School | 719 |
| 53 | Schurr High School | 719 |
| 53 | Heritage High School | 719 |
| 57 | Evergreen Valley High School | 717 |
| 57 | Independence High School | 717 |
| 57 | Temecula Valley High School | 717 |
| 57 | Bakersfield High School | 717 |
| 61 | Sanger High School | 712 |
| 62 | Lowell High School | 711 |
| 62 | Martin Luther King Jr. High School | 711 |
| 64 | San Clemente High School | 706 |
| 65 | Alisal High School | 704 |
| 66 | Eastlake High School | 702 |
| 67 | California High School | 699 |
| 68 | Castro Valley High School | 696 |
| 69 | Chino Hills High School | 693 |
| 70 | Ruben S. Ayala High School | 691 |
| 70 | Trabuco Hills High School | 691 |
| 72 | Arnold O. Beckman High School | 689 |
| 73 | Oxnard High School | 686 |
| 73 | William J. (Pete) Knight High School | 686 |
| 75 | Mira Costa High School | 684 |
| 76 | Liberty High School | 683 |
| 77 | Montclair High School | 681 |
| 78 | Coachella Valley High School | 678 |
| 79 | Everett Alvarez High School | 677 |
| 80 | Pioneer Valley High School | 673 |
| 81 | Yucaipa High School | 672 |
| 82 | California High School | 671 |
| 83 | Cypress High School | 670 |
| 84 | Valencia High School | 669 |
| 85 | Channel Islands High School | 665 |
| 86 | Franklin High School | 664 |
| 87 | Cajon High School | 661 |
| 87 | Santa Monica High School | 661 |
| 89 | Burbank High School | 660 |
| 90 | Clovis High School | 659 |
| 91 | El Camino High School | 658 |
| 91 | Ridgeview High School | 658 |
| 93 | Beaumont Senior High School | 656 |
| 94 | Valencia High School | 655 |
| 95 | Katella High School | 654 |
| 95 | Segerstrom High School | 654 |
| 97 | Alta Loma High School | 651 |
| 97 | Crescenta Valley High School | 651 |
| 99 | Buchanan High School | 650 |
| 100 | Sunnyside High School | 647 |
| 101 | Polytechnic High School | 645 |
| 102 | Troy High School | 644 |
| 103 | Mission Hills High School | 642 |
| 104 | La Quinta High School | 639 |
| 104 | Tesoro High School | 639 |
| 106 | Bell Gardens High School | 637 |
| 107 | Arvin High School | 636 |
| 108 | Clovis East High School | 635 |
| 109 | Sheldon High School | 633 |
| 110 | Chula Vista Senior High School | 632 |
| 111 | Arroyo Valley High School | 631 |
| 111 | Jordan High School | 631 |
| 113 | James A. Garfield Senior High School | 627 |
| 113 | Canyon Crest Academy | 627 |
| 115 | Salinas High School | 625 |
| 116 | Pleasant Grove High School | 624 |
| 117 | Dana Hills High School | 623 |
| 117 | Amador Valley High School | 623 |
| 119 | Modesto High School | 622 |
| 119 | Orange Vista High School | 622 |
| 119 | Mira Monte High School | 622 |
| 122 | La Serna High School | 619 |
| 123 | John H. Francis Polytechnic | 618 |
| 124 | San Jacinto High School | 617 |
| 125 | Torrey Pines High School | 616 |
| 126 | ACCESS County Community School | 614 |
| 127 | Foothill High School | 613 |
| 127 | Oak Ridge High School | 613 |
| 127 | Freedom High School | 613 |
| 130 | Monte Vista High School | 612 |
| 131 | Folsom High School | 611 |
| 131 | Valley View High School | 611 |
| 133 | Clovis North High School | 610 |
| 134 | Davis Senior High School | 609 |
| 135 | Menlo-Atherton High School | 607 |
| 135 | Clayton Valley Charter High School | 607 |
| 137 | Van Nuys Senior High School | 606 |
| 137 | Golden Valley High School | 606 |
| 139 | Turlock High School | 605 |
| 139 | Saugus High School | 605 |
| 141 | Olympian High School | 604 |
| 142 | Homestead High School | 602 |
| 143 | Westview High School | 601 |
| 143 | Alexander Hamilton Senior High School | 601 |
| 143 | San Juan Hills High School | 601 |
| 146 | Rancho Bernardo High School | 600 |
| 146 | Hemet High School | 600 |
| 146 | El Toro High School | 600 |
| 149 | Newbury Park High School | 599 |
| 149 | Palmdale High School | 599 |
| 149 | Montebello High School | 599 |
| 149 | San Leandro High School | 599 |
| 153 | Highland High School | 598 |
| 153 | Burroughs High School | 598 |
| 155 | Westlake High School | 596 |
| 155 | Cosumnes Oaks High School | 596 |
| 157 | Ontario High School | 595 |
| 157 | Murrieta Mesa High School | 595 |
| 159 | Helix High School | 592 |
| 160 | Walnut High School | 591 |
| 161 | Oak Hills High School | 590 |
| 161 | Heritage High School | 590 |
| 163 | Lancaster High School | 589 |
| 164 | Phineas Banning Senior High School | 588 |
| 165 | South Gate Senior High School | 586 |
| 165 | Edison High School | 586 |
| 167 | Santa Maria High School | 585 |
| 168 | Inderkum High School | 583 |
| 169 | Woodbridge High School | 581 |
| 169 | Capistrano Connections Academy | 581 |
| 171 | Vista High School | 580 |
| 171 | Henry High School | 580 |
| 173 | Silver Creek High School | 579 |
| 173 | Edison High School | 579 |
| 173 | Silverado High School | 579 |
| 173 | Monterey Trail High School | 579 |
| 177 | Otay Ranch Senior High School | 578 |
| 177 | Fontana High School | 578 |
| 177 | John Marshall Senior High School | 578 |
| 177 | American High School | 578 |
| 181 | Marina High School | 577 |
| 182 | Poway High School | 576 |
| 183 | C.K. McClatchy High School | 575 |
| 183 | Frontier High School | 575 |
| 185 | Adolfo Camarillo High School | 574 |
| 185 | Bullard High School | 574 |
| 185 | Summit High School | 574 |
| 188 | Newport Harbor High School | 573 |
| 188 | Alhambra High School | 573 |
| 188 | Stockdale High School | 573 |
| 191 | Corona High School | 572 |
| 192 | Bloomington High School | 571 |
| 193 | Monta Vista High School | 569 |
| 193 | San Ysidro High School | 569 |
| 193 | Hector G. Godinez | 569 |
| 196 | Glendora High School | 567 |
| 197 | Moreno Valley High School | 566 |
| 197 | Wilmer Amina Carter High School | 566 |
| 199 | Claremont High School | 565 |
| 199 | Granada High School | 565 |

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