Public schools in Castaic, CA
7 open public schools with an address in Castaic, operated by 3 education agencies. Compare size, staffing, grade spans, and school type, then confirm assignment with the district.
Public schools
7
NCES preliminary directory 2025–26
Reported students
3,621
6 schools reporting · NCES 2024–25
Median student–teacher ratio
23.9:1
California median 21.6:1
Charter schools
1
0 virtual
An overview of Castaic public schools
The federal directory lists 7 public schools in Castaic, CA: 3 elementary, 1 middle, 1 high, 2 combined or other. The 6 schools that reported 2024–25 membership enrolled 3,621 students, an average of 604 per school. The largest campus is Castaic High (1,159 students), and the largest elementary school is Northlake Hills Elementary (556).
Castaic Union operates the most schools here (5), and 2 regular districts have at least one Castaic campus, plus 1 charter, service, or other agency. City names come from school mailing addresses, which often differ from district or municipal boundaries.
Across schools that reported staffing, the median student–teacher ratio is 23.9:1, higher than the statewide school median of 21.6:1. A ratio counts classroom-teacher FTE against total enrollment, so specialized programs and part-time staffing can move it; ask schools for actual class sizes by grade.
School choice options include 1 charter school. Application windows and lotteries usually open months before the school year.
Among 2 high and combined schools with 2021–22 civil-rights data, 2 reported students enrolled in AP courses and 2 of 2 reported computer-science classes. Confirm current course catalogs directly with each school.
About 40% of students in reporting schools were eligible for free or reduced-price meals in 2024–25. This describes the community served; it is not a quality signal, and community-eligibility schools can report differently.
School districts and agencies serving Castaic
Elementary schools in Castaic
3| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| Castaic Elementary Castaic Union | KG–06 | 417 | 29.8:1 | |
| Live Oak Elementary Castaic Union | KG–06 | 490 | 27.2:1 | |
| Northlake Hills Elementary Castaic Union | KG–06 | 556 | 24.2:1 |
Middle schools in Castaic
1| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| Castaic Middle Castaic Union | 07–08 | 451 | 22.7:1 |
High schools in Castaic
1| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| Castaic High William S. Hart Union High | 09–12 | 1,159 | 23.6:1 |
Combined, early-childhood, and other schools in Castaic
2| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| Non-RIS Preschool CMS Castaic Union | Not reported | — | — | |
| Santa Clarita Valley International Santa Clarita Valley International District · Charter | KG–12 | 548 | 22.5:1 |
Student demographics
Race and ethnicity share of reported enrollment
- White34.7%
- Hispanic48.5%
- Black3.8%
- Asian6.2%
- American Indian / Alaska Native0.1%
- Native Hawaiian / Pacific Islander0.1%
- Multiracial6.5%
Enrollment-weighted across 6 Castaic schools with NCES CCD 2024–25 race/ethnicity counts (3,621 students). Privacy suppression can leave small gaps.
Questions about public schools in Castaic
How many public schools are in Castaic, CA?
The current NCES directory lists 7 open public schools with a location address in Castaic: 3 elementary, 1 middle, 1 high, 2 combined or other. Together they reported 3,621 students in 2024–25. The count includes charter, alternative, and special-purpose public schools; it excludes private schools.
Which school districts serve Castaic?
Schools with an address in Castaic belong to 3 education agencies, led by Castaic Union (5 schools), Santa Clarita Valley International District (1 school), William S. Hart Union High (1 school). A mailing city is not an attendance boundary; confirm the district for a specific address.
What is the largest public high school in Castaic?
Castaic High reported the largest high-school enrollment in Castaic, with 1,159 students in 2024–25 (grades 09–12). Size is a description of the campus, not a quality measure.
Are there charter schools in Castaic?
Yes. 1 of the 7 public schools in Castaic are identified as charter schools in the NCES directory, including Santa Clarita Valley International. Charter schools are public and tuition-free, but admission usually uses an application or lottery.
What is the typical student–teacher ratio in Castaic schools?
The median reported student–teacher ratio across Castaic public schools is 23.9:1, higher than the California school median of 21.6:1. The ratio divides enrollment by classroom-teacher FTE; it is not an average class size.
Does living in Castaic guarantee a seat at a specific school?
No. Assignment depends on the district's attendance boundaries, programs, and enrollment rules, which can split a city or cross city lines. Use the district profile and its official boundary or school-locator tool to confirm the assigned school for an exact address.
Nearby California cities
Sources: NCES Common Core of Data 2025–26 preliminary directory (schools, grades, addresses, charter status) and 2024–25 nonfiscal files (enrollment, teachers, race/ethnicity, meal eligibility); Civil Rights Data Collection 2021–22 (AP and computer science). Cities are grouped by school mailing address. Methodology · All California cities