(Regions are by school county)

Region 1
Del Norte, Humboldt, Lake, Mendocino, Sonoma

Region 2
Butte, Glenn, Lassen, Modoc, Plumas, Shasta, Siskiyou, Tehama, Trinity

Region 3
Alpine, Colusa, El Dorado, Nevada, Placer, Sacramento, Sierra, Sutter, Yolo, Yuba

Region 4
Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Solano

Region 5
Monterey, San Benito, Santa Clara, Santa Cruz

Region 6
Amador, Calaveras, San Joaquin, Stanislaus, Tuolumne

Region 7
Fresno, Kern, Kings, Madera, Mariposa, Merced, Tulare

Region 8
Los Angeles

Region 9
Imperial, San Diego

Region 10
Inyo, Mono, Riverside, San Bernardino

Region 11
Orange, Los Angeles

Region 12
San Luis Obispo, Santa Barbara, Ventura