Notable School Districts in California

This directory-style roundup highlights 50 school districts in California, selected from available COSMIQ profiles with enrollment data. The order reflects reported enrollment as a rough measure of institution size—not educational quality, outcomes, or endorsement. Enrollment figures are intentionally not shown.

Institutions

• Los Angeles Unified — Los Angeles, California.
• San Diego Unified — San Diego, California.
• Fresno Unified — Fresno, California.
• Long Beach Unified — Long Beach, California.
• Elk Grove Unified — Elk Grove, California.
• Corona-Norco Unified — Norco, California.
• San Francisco Unified — San Francisco, California.
• San Bernardino City Unified — San Bernardino, California.
• Kern High — Bakersfield, California.
• Clovis Unified — Clovis, California.
• Capistrano Unified — San Juan Capistrano, California.
• Santa Ana Unified — Santa Ana, California.
• Riverside Unified — Riverside, California.
• Sacramento City Unified — Sacramento, California.
• Garden Grove Unified — Garden Grove, California.
• San Juan Unified — Carmichael, California.
• Irvine Unified — Irvine, California.
• Sweetwater Union High — Chula Vista, California.
• Stockton Unified — Stockton, California.
• Poway Unified — San Diego, California.
• Oakland Unified — Oakland, California.
• Fontana Unified — Fontana, California.
• Fremont Unified — Fremont, California.
• Moreno Valley Unified — Moreno Valley, California.
• San Ramon Valley Unified — Danville, California.
• Mt. Diablo Unified — Concord, California.
• Visalia Unified — Visalia, California.
• Bakersfield City — Bakersfield, California.
• Anaheim Union High — Anaheim, California.
• Lodi Unified — Lodi, California.
• Temecula Valley Unified — Temecula, California.
• Desert Sands Unified — La Quinta, California.
• West Contra Costa Unified — Richmond, California.
• Chino Valley Unified — Chino, California.
• San Jose Unified — San Jose, California.
• Orange Unified — Orange, California.
• Manteca Unified — Manteca, California.
• Glendale Unified — Glendale, California.
• Rialto Unified — Rialto, California.
• Twin Rivers Unified — North Highlands, California.
• Saddleback Valley Unified — Mission Viejo, California.
• Chaffey Joint Union High — Ontario, California.
• Placentia-Yorba Linda Unified — Placentia, California.
• Hesperia Unified — Hesperia, California.
• Hemet Unified — Hemet, California.
• Murrieta Valley Unified — Murrieta, California.
• Downey Unified — Downey, California.
• Chula Vista Elementary — Chula Vista, California.
• Antelope Valley Union High — Lancaster, California.
• Tustin Unified — Tustin, California.

Selection and source notes

This list covers public K–12 district profiles. District names may describe city, county, or regional systems.

COSMIQ district profiles, based on NCES Common Core of Data. The source years recorded for these district enrollment records are 2017–18; these are historical estimates, not current counts.

Source references: COSMIQ district profiles; National Center for Education Statistics, Common Core of Data (CCD).

The article includes 50 profiles from the largest available enrollment estimates in this category. This is a size-based selection, not a “best schools” or academic-quality ranking.

Editorial note: COSMIQ has not independently evaluated or endorsed the listed institutions. Profile availability and source years vary; readers should consult each institution for current details.