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William S. Hart Union High Schools
William S. Hart Union High is a public school district in California, based in Los Angeles County (Santa Clarita). SchoolGrade grades 16 of its schools on actual versus projected test scores; every school below has its own page.
William S. Hart Union High on the map
District boundary from the NCES EDGE composite school district file. Each marker is a graded school; click it for its grade and scores.
SchoolGrade summary for William S. Hart Union High
3 of 16 schools in William S. Hart Union High carry a SchoolGrade (13 have too little test data to grade). Grade distribution:
D: 2F: 1
Best schools in William S. Hart Union High
Statewide rankings: all 1051 high schools in California · all 513 middle schools in California · all 1758 elementary schools in California
The ten highest SchoolGrades in the district. Grades reward actual test performance against the projection for each school's student context, so a B in a high-poverty school can outrank an A- elsewhere on impact.
- D+ Golden Valley High (High school, underperforms expectations)
- D- Rio Norte Junior High (Middle school, underperforms expectations)
- F La Mesa Junior High (Middle school, doesn't meet expectations)
Every school in William S. Hart Union High
High schools (8)
- Bowman Jereann High Continuation, Santa Clarita
- Canyon High, Canyon Country
- Castaic High, Castaic
- D+ Golden Valley High, Santa Clarita
- Saugus High, Saugus
- Valencia High, Valencia
- West Ranch High, Valencia
- William S Hart High, Newhall
Middle and junior high schools (6)
- Arroyo Seco Junior High, Valencia
- F La Mesa Junior High, Santa Clarita
- Placerita Junior High, Newhall
- Rancho Pico Junior High, Stevenson Ranch
- D- Rio Norte Junior High, Santa Clarita
- Sierra Vista Junior High, Canyon Country
Other schools and academies (2)
- Academy Of The Canyons, Santa Clarita
- Learning Post Academy Alternative, Santa Clarita
Where William S. Hart Union High schools are
Cities and towns served (6)
- Santa Clarita (6)
- Valencia (3)
- Canyon Country (2)
- Newhall (2)
- Castaic (1)
- Stevenson Ranch (1)
About this district
- State: Best schools in California
- County: Los Angeles County
- Type: regular local school district
- Setting: large suburb (NCES locale of the district office)
- Enrollment: 20,685 students with 939 full-time-equivalent teachers and 2,093 total staff FTE (NCES CCD, 2023-24)
- NCES district ID: 0642510
- Grades are the 2025-26 SchoolGrade model: each school's actual proficiency against the level projected for its student context. How SchoolGrade works
Nearby school districts
- Saugus Union (15 schools, 5 mi)
- Castaic Union (4 schools, 7 mi)
- Newhall (10 schools, 8 mi)
- Sulphur Springs Union (9 schools, 9 mi)
- Simi Valley Unified (26 schools, 17 mi)
- Acton-Agua Dulce Unified (3 schools, 18 mi)
- Westside Union Elementary (12 schools, 19 mi)
- Fillmore Unified (8 schools, 21 mi)
Questions about William S. Hart Union High
How many schools are in William S. Hart Union High?
SchoolGrade grades 16 public schools in William S. Hart Union High, across 6 cities and towns. Every one of them is listed on this page with a link to its own report.
Which cities does William S. Hart Union High serve?
The largest by graded schools: Santa Clarita, Valencia, Canyon Country, Newhall, Castaic and 1 more.
How good are the schools in William S. Hart Union High?
Across the 3 graded schools, the average SchoolGrade is D-, with 16.7% of tested students meeting the state bar against a projected 35.7%. 0% of schools meet or exceed the expectation for their student context.
How many students attend William S. Hart Union High?
20,685 students were enrolled in William S. Hart Union High in the 2023-24 school year, about 22.0 students per full-time teacher (NCES Common Core of Data).
Where is William S. Hart Union High?
William S. Hart Union High is in California, based in Los Angeles County, with its district office in Santa Clarita. Its boundary covers about 392 sq mi.