15 public K-12 schools in Castro Valley from NCES Common Core of Data: enrollment, grade span, demographics, and Civil Rights Data Collection statistics for every active campus.
15 public schools ranked by quality score. NCES CCD 2024-25 data.
The highest-ranked of Castro Valley's 15 public schools is Castro Valley High, scoring 29/100, against a city average of 30.1/100. Computed live across every Castro Valley campus reporting to NCES.
How the Castro Valley Public-School Landscape Breaks Down
Castro Valley, CA enrolls 9,548 students across 15 public schools reporting to the National Center for Education Statistics. The average student-teacher ratio across the city is 22:1, and the composite quality score, derived from student-teacher ratio, counselor access, gifted-program availability, and CRDC attendance data, averages 30.1/100. Schools must report at least five campuses in a city to appear in this listing, which is why very small towns may redirect to the broader county or state view.
The most-resourced campus in Castro Valley on this index is Castro Valley High, at 29/100 on the Resource Investment Index with 2,874 enrolled students. What the index does and doesn't measure; click any school below for its full component breakdown.
Castro Valley spans 1 district, each filing its own NCES F-33 return, per-pupil spending can vary between neighbouring campuses. Sort the table below by enrollment, level, or district; click any school for its full profile.
Castro Valley High accounts for 30.1% of all Castro Valley public-school enrollment
That dominant concentration means Castro Valley-wide averages can mask substantial variation outside the dominant entity. Grade level: High. A dominant campus often anchors a city's program landscape and absorbs a disproportionate share of district capital and staffing decisions. When one entity dominates a region's footprint, its programmatic and budget decisions effectively set policy for a majority of the affected population.
Castro Valley school enrollment varies 160× across entities
Castro Valley school enrollment ranges from 18 students (lowest) to 2,874 students (highest), a spread of 2,856 students. That ratio is an extreme outlier spread — among the widest gaps observed anywhere in this dataset. Per-school staffing, programme depth, and capital-renovation cycles often diverge inside the same city based on enrollment shape, a 200-student magnet runs a different operational model than a 2,000-student comprehensive high school.
Castro Valley operates only 1 school district — one of the single most consolidated governance structures in the country
Most Castro Valley school districts are a single unified district covering the whole city, a structural feature that simplifies inter-school comparison but concentrates policy authority, and the count here is near the floor observed nationally. Consolidation produces narrower variance because resources pool across a large population, but it can also mask intra-school district inequities — sub-school district differences within a single school district are not visible at this aggregation level. Consolidated systems typically rely more heavily on top-down funding formulas than on local revenue variability.
Castro Valley student-teacher ratio is 22.0:1 — high (typically associated with larger urban scale or staffing constraints that have widened the headcount gap)
student-teacher ratio is the simplest comparative metric but it does not capture the full picture: the ratio counts FTE classroom teachers against total enrollment, push-in specialists, English-language aides, special-education co-teachers, and counselors are not included in most reporting Higher values may reflect larger urban scale or recent resource constraints that have widened the gap.
Most racially and ethnically mixed schools in Castro Valley
Ranked by the Simpson student-body diversity index (0-100) from NCES race and ethnicity data, where higher means a more evenly mixed student body. It measures mix, not quality.
The highest-ranked school in Castro Valley is Castro Valley High with a quality score of 29/100. There are 15 public schools in Castro Valley with 9,548 total students.
How many schools are in Castro Valley, CA? ▼
Castro Valley has 15 public schools with a total enrollment of 9,548 students. Average student-teacher ratio: 22:1.
Data from NCES Common Core of Data (CCD) 2024-25 and Civil Rights Data Collection (CRDC) 2021-22. Quality scores based on student-teacher ratio,
counselor access, gifted programs, and attendance. Schools must have 5+ in the city to be listed.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the NCES Common Core of Data (CCD). Consult a qualified professional before making decisions based on this data.
Read our methodology, which explains how this data is sourced, computed, and verified.
