District Contact & Information
Source: NCES CCD 2024–25Schools in William S. Hart Union High School District
16 schools listed| School | Level | Grades | Students | City |
|---|---|---|---|---|
| Arroyo Seco Junior High | Middle | 7th – 8th | 1,239 | Valencia |
| La Mesa Junior High | Middle | 7th – 8th | 1,017 | Santa Clarita |
| Placerita Junior High | Middle | 7th – 8th | 940 | Newhall |
| Rancho Pico Junior High | Middle | 7th – 8th | 842 | Stevenson Ranch |
| Rio Norte Junior High | Middle | 7th – 8th | 1,138 | Santa Clarita |
| Sierra Vista Junior High | Middle | 7th – 8th | 946 | Canyon Country |
| Academy of the Canyons | High | 9th – 12th | 385 | Santa Clarita |
| Bowman (Jereann) High (Continuation) | High | 9th – 12th | 224 | Santa Clarita |
| Canyon High | High | 9th – 12th | 1,952 | Canyon Country |
| Castaic High | High | 9th – 12th | 1,159 | Castaic |
| Golden Valley High | High | 9th – 12th | 1,980 | Santa Clarita |
| Saugus High | High | 9th – 12th | 2,317 | Saugus |
| Valencia High | High | 9th – 12th | 2,286 | Valencia |
| West Ranch High | High | 9th – 12th | 1,777 | Valencia |
| William S. Hart High | High | 9th – 12th | 1,941 | Newhall |
| Learning Post Academy (Alternative) | Other | 7th – 12th | 322 | Santa Clarita |
Zip Codes Served by William S. Hart Union High School District
9 zip codes| Zip Code | City | County | State |
|---|---|---|---|
| 91321 | Newhall | Los Angeles County | CA |
| 91350 | Santa Clarita | Los Angeles County | CA |
| 91351 | Canyon Country | Los Angeles County | CA |
| 91354 | Valencia | Los Angeles County | CA |
| 91355 | Valencia | Los Angeles County | CA |
| 91381 | Stevenson Ranch | Los Angeles County | CA |
| 91384 | Castaic | Los Angeles County | CA |
| 91387 | Canyon Country | Los Angeles County | CA |
| 91390 | Santa Clarita | Los Angeles County | CA |
Frequently Asked Questions
About William S. Hart Union High School District
William S. Hart Union High School District is a public school district serving 9 zip codes in California, primarily in Los Angeles County. It carries an overall rating of 9/10 (Excellent), the 83rd percentile among California districts. That rating reflects the share of students proficient in reading and math on state assessments (CAASPP 2023–24) and is ranked only against other California districts — scores are not comparable between states. Directory details on this page come from the NCES Common Core of Data, 2024–25.
Schools in this district
NCES lists 16 schools operating under William S. Hart Union High School District — 6 middle, 9 high and 1 other or combined. The largest by enrollment is Saugus High with 2,317 students. School-level enrollment comes from the NCES Common Core of Data school directory; a school with no reported enrollment is shown with a dash rather than a zero.
Checking your own address
District boundaries are address-specific and do not follow zip code lines exactly — a single zip code can be split between two or more districts. Use the zip codes listed above as a starting point, then confirm your assignment with the district office at (661)259-0033 before making a housing decision.