Castaic High

High school·Grades 9-12 Castaic, California·91384
Score
83.0/100
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#294
Among 1,729 California high schools
#6
In William S. Hart Union High
Top 18%
In California

Score 83.0/100: better than 83% of California high schools on 2024-25 state tests. Schools are only compared with others of the same type in the same state. How we score schools

Performance (state tests, 2024-25)

% met or exceeded standard on state tests in California, all students. Colored bars are green when the school is at or above the average for similar California schools.

English language arts
74%
Similar California schools ≈ 57%, better than 86% of them
273 students tested
Math
34%
Similar California schools ≈ 31%, better than 74% of them
270 students tested
Science
55%
Similar California schools ≈ 33%, better than 90% of them
271 students tested
All California schools (ELA / math)
49% / 37%
State average across every school type, 2024-25
All 14 published results by grade and test

As published by California Department of Education. "Hidden" means the state didn't publish the result to protect student privacy.

SubjectGradeTestResultStudents tested
English language artsGrade 7Smarter Balanced ELAhidden (small group)—
English language artsGrade 8Smarter Balanced ELAhidden (small group)5
English language artsGrade 11Smarter Balanced ELA75.9266
English language artsAll gradesSmarter Balanced ELA74.4273
MathGrade 7Smarter Balanced Mathhidden (small group)—
MathGrade 8Smarter Balanced Mathhidden (small group)5
MathGrade 11Smarter Balanced Math35.4263
MathAll gradesSmarter Balanced Math34.4270
ScienceGrade 8CASThidden (small group)5
ScienceGrade 11CAST55.7262
ScienceGrade 12CASThidden (small group)4
ScienceGrade 14CAST55.3266
ScienceAll gradesCAST54.6271
ScienceGrade 99CAST52.0271

School profile

Grades
9-12
Students
1,193
Type
High school
Charter school
No
Program
Regular

Students

Enrollment
1,193
Typical high school: 434
Free or reduced-price lunch
22%
Typical high school: 70%

District and location

City
Los Angeles County

Contact

Address
31575 Valley Creek Rd.
Castaic, CA 91384

"Typical" is the middle (median) high school in California. Higher or lower is not in itself better or worse. Address, phone and website are as the state reported them to the U.S. Department of Education for 2024-25, so check with the school before visiting. School details: U.S. Department of Education, Common Core of Data (enrollment 2023-24, lunch eligibility 2024-25).

Nearby high schools

Straight-line distance. Check the district's attendance zones: living close to a school doesn't guarantee a place.

Location

OpenStreetMap · Google Maps

Castaic High at a glance

Castaic High is a public high school in Castaic, California, serving grades 9-12. It is part of the William S. Hart Union High school district. It has about 1,193 students (a typical California high school has 434). About 22% of students are eligible for free or reduced-price lunch, compared with 70% at a typical California high school, which is useful context when reading test results.

In 2024-25 state tests, 74% in English language arts (similar schools: 57%) and 34% in math (similar schools: 31%) reached the state standard (% met or exceeded standard). On our score, which compares it only with other California high schools, it scores 83.0 out of 100: better than 83% of them, ranking #294 of 1,729. Its English language arts result rose by 4 points from the year before. This overview is generated automatically from published state and federal data; figures are rounded, and you can check the originals via the official sources above.

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Page updated 2026-10-12.