Highlands Community Charter School had the most ninth-grade students enrolled in California with 2,719.
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 | Highlands Community Charter School | 2,719 |
| 2 | Central High East Campus | 1,316 |
| 3 | Granada Hills Charter High School | 1,244 |
| 4 | Eleanor Roosevelt High School | 1,217 |
| 5 | Downey High School | 1,127 |
| 6 | Polytechnic High School | 1,074 |
| 7 | Paramount High School | 1,071 |
| 8 | Pittsburg Senior High School | 1,021 |
| 9 | Wilson High School | 999 |
| 10 | Vista Murrieta High School | 983 |
| 11 | Etiwanda High School | 977 |
| 12 | Assurance Learning Academy | 934 |
| 13 | Paloma Valley High School | 933 |
| 14 | Sanger High School | 931 |
| 15 | Dublin High School | 929 |
| 16 | San Marcos High School | 917 |
| 17 | El Camino Real Charter High School | 916 |
| 18 | Centennial High School | 911 |
| 19 | San Benito High School | 910 |
| 20 | Millikan High School | 888 |
| 21 | Chaffey High School | 881 |
| 22 | Rancho Cucamonga High School | 879 |
| 23 | Santa Ana High School | 878 |
| 24 | James Logan High School | 869 |
| 25 | Beaumont Senior High School | 862 |
| 26 | Milpitas High School | 861 |
| 26 | Dougherty Valley High School | 861 |
| 28 | Santa Maria High School | 856 |
| 29 | Pacifica High School | 855 |
| 30 | Earl Warren High School | 849 |
| 31 | Los Alamitos High School | 846 |
| 31 | William J. (Pete) Knight High School | 846 |
| 33 | Lakewood High School | 841 |
| 34 | Santiago High School | 838 |
| 34 | Highland High School | 838 |
| 36 | Bakersfield High School | 831 |
| 37 | Palisades Charter High School | 824 |
| 38 | Arroyo Valley High School | 821 |
| 39 | Quartz Hill High School | 818 |
| 39 | Birmingham Community Charter High School | 818 |
| 41 | Redondo Union High School | 817 |
| 42 | Martin Luther King Jr. High School | 816 |
| 43 | Rialto High School | 813 |
| 43 | Berkeley High School | 813 |
| 45 | Arvin High School | 803 |
| 45 | Pioneer Valley High School | 803 |
| 47 | Upland High School | 802 |
| 48 | Great Oak High School | 800 |
| 49 | Valley View High School | 794 |
| 50 | Opportunities for Learning - Baldwin Park | 793 |
| 51 | Alisal High School | 792 |
| 51 | San Pedro Senior High School | 792 |
| 51 | Heritage High School | 792 |
| 54 | Mission Hills High School | 791 |
| 55 | Grover Cleveland Charter High School | 788 |
| 56 | Cajon High School | 784 |
| 57 | Oxnard High School | 778 |
| 57 | Lincoln High School | 778 |
| 59 | Montclair High School | 775 |
| 59 | San Diego Workforce Innovation High School | 775 |
| 61 | Chaparral High School | 774 |
| 61 | North Hollywood Senior High School | 774 |
| 63 | Temecula Valley High School | 772 |
| 64 | Fontana High School | 768 |
| 65 | Sunnyside High School | 765 |
| 66 | Arcadia High School | 764 |
| 67 | Coachella Valley High School | 762 |
| 68 | Ridgeview High School | 759 |
| 69 | Clovis High School | 758 |
| 70 | San Jacinto High School | 757 |
| 70 | Huntington Beach High School | 757 |
| 72 | Yucaipa High School | 755 |
| 73 | Lancaster High School | 753 |
| 73 | California High School | 753 |
| 73 | Eastside High School | 753 |
| 76 | Franklin High School | 750 |
| 77 | Anaheim High School | 746 |
| 78 | Calexico High School | 743 |
| 79 | Clovis East High School | 737 |
| 80 | El Camino High School | 736 |
| 80 | Los Osos High School | 736 |
| 82 | California High School | 735 |
| 82 | Segerstrom High School | 735 |
| 84 | Fresno High School | 732 |
| 85 | Evergreen Valley High School | 731 |
| 85 | Edison High School | 731 |
| 87 | Fountain Valley High School | 730 |
| 88 | Santa Monica High School | 729 |
| 88 | Arnold O. Beckman High School | 729 |
| 90 | San Clemente High School | 727 |
| 91 | Hueneme High School | 725 |
| 91 | San Juan Hills High School | 725 |
| 93 | Golden Valley High School | 723 |
| 94 | Torrey Pines High School | 719 |
| 95 | Roosevelt High School | 715 |
| 96 | Phineas Banning Senior High School | 713 |
| 97 | Independence High School | 709 |
| 97 | Patriot High School | 709 |
| 99 | Channel Islands High School | 707 |
| 100 | Eastlake High School | 706 |
| 100 | Folsom High School | 706 |
| 102 | Van Nuys Senior High School | 704 |
| 103 | Highland High School | 702 |
| 103 | Mira Monte High School | 702 |
| 105 | Cypress High School | 700 |
| 106 | Palmdale High School | 698 |
| 107 | Heritage High School | 697 |
| 108 | Summit High School | 694 |
| 109 | Aliso Niguel High School | 693 |
| 110 | Polytechnic High School | 692 |
| 110 | Salinas High School | 692 |
| 110 | San Leandro High School | 692 |
| 113 | Troy High School | 691 |
| 114 | Trabuco Hills High School | 690 |
| 114 | Pleasant Grove High School | 690 |
| 116 | Redwood High School | 689 |
| 116 | Modesto High School | 689 |
| 116 | Westminster High School | 689 |
| 119 | Katella High School | 687 |
| 119 | Bell Senior High School | 687 |
| 121 | Liberty High School | 680 |
| 122 | Castro Valley High School | 679 |
| 123 | Buchanan High School | 678 |
| 123 | Orange Vista High School | 678 |
| 125 | East Bakersfield High School | 677 |
| 125 | Oak Hills High School | 677 |
| 127 | Amador Valley High School | 676 |
| 128 | John W. North High School | 675 |
| 129 | Chino Hills High School | 672 |
| 130 | Valencia High School | 671 |
| 130 | James A. Garfield Senior High School | 671 |
| 132 | Ernest Righetti High School | 668 |
| 133 | Oak Ridge High School | 663 |
| 134 | La Quinta High School | 662 |
| 135 | Taft Charter High School | 661 |
| 136 | John H. Francis Polytechnic High School | 660 |
| 136 | Joseph A. Gregori High School | 660 |
| 136 | Central Valley High School | 660 |
| 139 | Rio Mesa High School | 657 |
| 140 | Elsinore High School | 656 |
| 141 | Burbank High School | 655 |
| 142 | Saugus High School | 654 |
| 143 | Hector G. Godinez School | 652 |
| 144 | Hemet High School | 651 |
| 145 | Helix High School | 650 |
| 145 | Murrieta Mesa High School | 650 |
| 147 | Lowell High School | 649 |
| 147 | Henry High School | 649 |
| 147 | La Serna High School | 649 |
| 150 | Edison High School | 648 |
| 151 | Bullard High School | 646 |
| 151 | Freedom High School | 646 |
| 151 | Clovis North High School | 646 |
| 154 | Silver Creek High School | 645 |
| 154 | Rancho Bernardo High School | 645 |
| 156 | Mira Costa High School | 643 |
| 157 | Turlock High School | 642 |
| 158 | Diamond Bar High School | 640 |
| 159 | Bonita Vista Senior High School | 638 |
| 160 | Westview High School | 637 |
| 160 | Sheldon High School | 637 |
| 160 | Bell Gardens High School | 637 |
| 163 | Hesperia High School | 636 |
| 163 | Alexander Hamilton Senior High School | 636 |
| 165 | Moreno Valley High School | 635 |
| 165 | Herbert Hoover High School | 635 |
| 165 | Indian Springs High School | 635 |
| 168 | Burroughs High School | 634 |
| 169 | Ruben S. Ayala High School | 633 |
| 169 | Claremont High School | 633 |
| 169 | Alta Vista Innovation High School | 633 |
| 172 | Fontana A.B. Miller High School | 632 |
| 173 | James C. Enochs High School | 631 |
| 174 | Temescal Canyon High School | 629 |
| 174 | Inderkum High School | 629 |
| 176 | American High School | 628 |
| 177 | Alta Loma High School | 627 |
| 178 | Mira Mesa High School | 625 |
| 178 | Canyon Springs High School | 625 |
| 180 | Ramona High School | 624 |
| 181 | Central Union High School | 623 |
| 182 | Eisenhower Senior High School | 622 |
| 182 | Corona High School | 622 |
| 182 | Foothill High School | 622 |
| 185 | Schurr High School | 621 |
| 186 | Paso Robles High School | 620 |
| 186 | Serrano High School | 620 |
| 188 | Granada High School | 619 |
| 189 | Perris High School | 618 |
| 190 | River City High School | 617 |
| 190 | Otay Ranch Senior High School | 617 |
| 190 | Grant Union High School | 617 |
| 190 | Alternative Education-San Joaquin High School | 617 |
| 194 | Independence High School | 616 |
| 195 | Watsonville High School | 615 |
| 195 | Silverado High School | 615 |
| 195 | El Rancho High School | 615 |
| 195 | Del Norte High School | 615 |
| 199 | John F. Kennedy High School | 614 |
| 200 | Sunny Hills High School | 613 |

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