Acalanes High School is a public secondary school located in Lafayette, California, United States, in the San Francisco Bay Area, within Contra Costa County. Acalanes was the first of four high schools established in the Acalanes Union High School District.
Serving 1,256 students in grades 9-12, Acalanes High School ranks in the top 10% of all schools in California for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 68% (which is higher than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 80% (which is higher than the California state average of 47%).
The student-teacher ratio of 20:1 is lower than the California state level of 21:1.
Minority enrollment is 37% of the student body (majority Hispanic and Asian), which is lower than the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 1,256 students
- Student-Teacher Ratio: 20:1
- Minority Enrollment: 37%
- Graduation Rate: 96% (Top 10% in CA)
- Overall Testing Rank: Top 10%
- Math Proficiency: 68% (Top 10%)
- Reading Proficiency: 80% (Top 5%)
- Science Proficiency: 54% (Top 20%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Acalanes High School ranks among the top 20% of public schools in California for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
Graduation Rate
School Overview
Acalanes High School's student population of 1,256 students has stayed relatively flat over five school years.
The teacher population of 64 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
1,256 students
Total Classroom Teachers
64 teachers
Year Founded
1940
Colors
White, Royal blue
School Calendar
School Rankings
Acalanes High School ranks within the top 10% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Acalanes High School is 0.57, which is less 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
#578 out of 9523 schools
(Top 10%)
(Top 10%)
Math Test Scores (% Proficient)
68%
34%
Reading/Language Arts Test Scores (% Proficient)
80%
47%
Science Test Scores (% Proficient)
54%
29%
Student-Teacher Ratio
20:1
21:1
American Indian
n/a
1%
Asian
12%
12%
Hispanic
12%
56%
Black
2%
5%
White
63%
20%
Hawaiian
n/a
n/a
Two or more races
11%
6%
All Ethnic Groups
Graduation Rate
96%
87%
Eligible for Free Lunch
7%
54%
Eligible for Reduced Lunch (19-20)
1%
7%
School Statewide Testing
School District Name
Acalanes Union High School District
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Acalanes High School's ranking?
Acalanes High School is ranked #578 out of 9,523 schools, which ranks it among the top 10% of public schools in California.
What schools are Acalanes High School often compared to?
Acalanes High Schoolis often viewed alongside schools like Campolindo High School, Northgate High School, College Park High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
68% of students have achieved math proficiency (compared to the 34% CA state average), while 80% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Acalanes High School?
The graduation rate of Acalanes High School is 96%, which is higher than the California state average of 87%.
How many students attend Acalanes High School?
1,256 students attend Acalanes High School.
What is the racial composition of the student body?
63% of Acalanes High School students are White, 12% of students are Asian, 12% of students are Hispanic, 11% of students are Two or more races, and 2% of students are Black.
What is the student-teacher ratio of Acalanes High School?
Acalanes High School has a student ration of 20:1, which is lower than the California state average of 21:1.
What grades does Acalanes High School offer ?
Acalanes High School offers enrollment in grades 9-12
What school district is Acalanes High School part of?
Acalanes High School is part of Acalanes Union High School District.
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