Serving 1,159 students in grades 9-12, Castaic High School ranks in the top 30% of all schools in California for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 32% (which is lower than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 74% (which is higher than the California state average of 47%).
The student-teacher ratio of 24:1 is higher than the California state level of 21:1.
Minority enrollment is 65% of the student body (majority Hispanic), which is lower than the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 1,159 students
- Student-Teacher Ratio: 24:1
- Minority Enrollment: 65%
- Graduation Rate: 95% (Top 30% in CA)
- Overall Testing Rank: Top 30%
- Math Proficiency: 32% (Top 50%)
- Reading Proficiency: 74% (Top 10%)
- Science Proficiency: <50% (Top 20%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Castaic High School ranks among the top 20% of public schools in California for:
Category
Attribute
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Castaic High School's student population of 1,159 students has grown by 58% over five school years.
The teacher population of 49 teachers has grown by 44% over five school years.
Grades Offered
Grades 9-12
Total Students
1,159 students
Total Classroom Teachers
49 teachers
School Rankings
Castaic High School ranks within the top 30% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Castaic High School is 0.64, which is more than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#2343 out of 9523 schools
(Top 30%)
(Top 30%)
Math Test Scores (% Proficient)
32%
34%
Reading/Language Arts Test Scores (% Proficient)
74%
47%
Science Test Scores (% Proficient)
<50%
29%
Student-Teacher Ratio
24:1
21:1
American Indian
n/a
1%
Asian
8%
12%
Hispanic
48%
56%
Black
5%
5%
White
35%
20%
Hawaiian
n/a
n/a
Two or more races
4%
6%
All Ethnic Groups
Graduation Rate
95%
87%
Chronically Absent Students
(22-23)21.1%
27.7%
Eligible for Free Lunch
21%
54%
Eligible for Reduced Lunch
1%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Castaic High School's ranking?
Castaic High School is ranked #2343 out of 9,523 schools, which ranks it among the top 30% of public schools in California.
What schools are Castaic High School often compared to?
Castaic High Schoolis often viewed alongside schools like Canyon High School, Golden Valley High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
32% of students have achieved math proficiency (compared to the 34% CA state average), while 74% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Castaic High School?
The graduation rate of Castaic High School is 95%, which is higher than the California state average of 87%.
How many students attend Castaic High School?
1,159 students attend Castaic High School.
What is the racial composition of the student body?
48% of Castaic High School students are Hispanic, 35% of students are White, 8% of students are Asian, 5% of students are Black, and 4% of students are Two or more races.
What is the student-teacher ratio of Castaic High School?
Castaic High School has a student ration of 24:1, which is higher than the California state average of 21:1.
What grades does Castaic High School offer ?
Castaic High School offers enrollment in grades 9-12
What school district is Castaic High School part of?
Castaic High School is part of William S. Hart Union High School District.
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