| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| San Ramon Valley Unified School District | Danville | 10/10 Excellent · 96th pct | 29,680 | 37 | K–12 | 7 |
| Acalanes Union High School District | Canyon | 10/10 Excellent · 95th pct | 5,420 | 5 | 9–12 | 8 |
| Martinez Unified School District | Martinez | 8/10 Good · 74th pct | 3,772 | 9 | K–12 | 1 |
| Knightsen Elementary School District | Knightsen | 7/10 Good · 65th pct | 577 | 2 | K–8 | 1 |
| Byron Union Elementary School District | Byron | 7/10 Good · 64th pct | 1,230 | 4 | K–12 | 1 |
| Liberty Union High School District | Discovery Bay | 7/10 Good · 63rd pct | 8,233 | 5 | 9–12 | 4 |
| Mount Diablo Unified School District | Clayton | 7/10 Good · 60th pct | 29,201 | 52 | K–12 | 7 |
| West Contra Costa Unified School District | El Cerrito | 3/10 Below Average · 29th pct | 25,737 | 54 | K–12 | 9 |
| John Swett Unified School District | Crockett | 2/10 Poor · 17th pct | 1,234 | 4 | K–12 | 3 |
| Pittsburg Unified School District | Pittsburg | 2/10 Poor · 15th pct | 10,665 | 13 | K–12 | 1 |
| Antioch Unified School District | Antioch | 2/10 Poor · 11th pct | 15,192 | 25 | K–12 | 2 |
How Contra Costa County compares
Together they enroll 130,941 students across 210 schools. The largest is San Ramon Valley Unified School District with 29,680 students. Districts here average 5.9/10, above the California average of 5.5/10. Ratings range from 2/10 to 10/10.
School Districts in Contra Costa County, California
Contra Costa County has 11 public school districts covering 44 zip codes. The top-rated district in Contra Costa County is San Ramon Valley Unified School District (10/10). Ratings are based on the share of students proficient in reading and math on state assessments (CAASPP 2023–24), ranked against all districts in California. Directory details come from NCES CCD 2024–25.
Enter your zip code on any page to confirm your exact district assignment — district boundaries are address-specific and may not follow county or city lines.