| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Piedmont City Unified School District | Piedmont | 10/10 Excellent · 99th pct | 2,336 | 7 | K–12 | 0 |
| Sunol Glen Unified School District | Sunol | 10/10 Excellent · 98th pct | 268 | 1 | K–8 | 1 |
| Dublin Unified School District | Dublin | 10/10 Excellent · 97th pct | 12,557 | 15 | K–12 | 1 |
| Pleasanton Unified School District | Pleasanton | 10/10 Excellent · 96th pct | 13,876 | 17 | K–12 | 2 |
| Albany City Unified School District | Albany | 10/10 Excellent · 94th pct | 3,529 | 6 | K–12 | 1 |
| Fremont Unified School District | Fremont | 10/10 Excellent · 94th pct | 33,107 | 44 | K–12 | 4 |
| Berkeley Unified School District | Berkeley | 10/10 Excellent · 92nd pct | 9,073 | 18 | K–12 | 9 |
| Alameda Unified School District | Alameda | 9/10 Excellent · 89th pct | 8,830 | 16 | K–12 | 2 |
| Castro Valley Unified School District | Castro Valley | 9/10 Excellent · 88th pct | 9,207 | 16 | K–12 | 2 |
| Livermore Valley Joint Unified School District | Livermore | 9/10 Excellent · 82nd pct | 12,956 | 18 | K–12 | 2 |
| Chico Unified School District | Chico | 8/10 Good · 70th pct | 12,088 | 22 | K–12 | 1 |
| New Haven Unified School District | Union City | 7/10 Good · 63rd pct | 10,235 | 13 | K–12 | 1 |
| Newark Unified School District | Newark | 6/10 Average · 57th pct | 4,955 | 10 | K–12 | 1 |
| San Leandro Unified School District | San Leandro | 5/10 Average · 41st pct | 8,624 | 13 | K–12 | 2 |
| Emery Unified School District | Emeryville | 4/10 Below Average · 39th pct | 627 | 3 | K–12 | 0 |
| Oakland Unified School District | Oakland | 4/10 Below Average · 33rd pct | 34,149 | 82 | K–12 | 15 |
| San Lorenzo Unified School District | San Leandro | 3/10 Below Average · 25th pct | 8,477 | 17 | K–12 | 2 |
| Hayward Unified School District | Hayward | 3/10 Below Average · 23rd pct | 17,993 | 29 | K–12 | 4 |
| Mountain House Elementary School District | Byron | Not rated | 21 | 1 | K–8 | 0 |
How Alameda County compares
Together they enroll 202,908 students across 348 schools. The largest is Oakland Unified School District with 34,149 students. Districts here average 7.6/10, above the California average of 5.7/10. Ratings range from 3/10 to 10/10. 1 of the 19 districts has no state assessment data and is shown as Not rated.
School Districts in Alameda County, California
Alameda County has 19 public school districts covering 50 zip codes. The top-rated district in Alameda County is Piedmont City 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.
Frequently Asked Questions
How many school districts are in Alameda County, CA?
19 school districts serve zip codes in Alameda County, CA. This page lists each one with its rating, enrollment, grade span and the zip codes it covers.
What is the best-rated school district in Alameda County, CA?
Of the districts serving Alameda County, Piedmont City Unified School District has the highest rating on this site at 10/10. That places it in the 99th percentile among California school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on California reading and math assessments, ranked against other districts in California and converted to a 1–10 scale. Percentiles compare districts within California only, never across state lines.