Los Altos High School is a comprehensive four-year public education high school located in the bedroom community of Hacienda Heights, California, United States, in eastern Los Angeles County. It should not be confused with the Los Altos High School located in the city of Los Altos, California.
Serving 1,574 students in grades 9-12, Los Altos High School ranks in the top 50% 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 27% (which is lower than the California state average of 33%). The percentage of students achieving proficiency in reading/language arts is 71% (which is higher than the California state average of 47%).
The student:teacher ratio of 23:1 is higher than the California state level of 21:1.
Minority enrollment is 97% of the student body (majority Hispanic), which is higher than the California state average of 80% (majority Hispanic).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 1,574 students
- Student:Teacher Ratio: 23:1
- Minority Enrollment: 97%
- Graduation Rate: 98% (Top 5% in CA)
- Overall Testing Rank: Top 50%
- Math Proficiency: 27% (Top 50%)
- Reading Proficiency: 71% (Top 20%)
- Science Proficiency: 22% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Los Altos High School ranks among the top 20% of public schools in California for:
Category
Attribute
Reading/Language Arts Proficiency
Graduation Rate
School Overview
Los Altos High School's student population of 1,574 students has declined by 7% over five school years.
The teacher population of 68 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
1,574 students
Gender %
Total Classroom Teachers
68 teachers
Year Founded
1958
Colors
White, Red, Royal blue
School Rankings
Los Altos High School ranks within the top 50% of all 9,602 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Los Altos High School is 0.19, 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
#3001 out of 9602 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
27%
33%
Reading/Language Arts Test Scores (% Proficient)
71%
47%
Science Test Scores (% Proficient)
22%
29%
Student : Teacher Ratio
23:1
21:1
American Indian
n/a
1%
Asian
6%
12%
Hispanic
90%
56%
Black
n/a
5%
White
3%
20%
Hawaiian
n/a
n/a
Two or more races
1%
6%
All Ethnic Groups
Graduation Rate
98%
87%
Eligible for Free Lunch
58%
54%
Eligible for Reduced Lunch
18%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Notes
- School Mascot: Joe The Conqueror
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Los Altos High School's ranking?
Los Altos High School is ranked #3001 out of 9,602 schools, which ranks it among the top 50% of public schools in California.
What schools are Los Altos High School often compared to?
Los Altos High Schoolis often viewed alongside schools like Glen A. Wilson High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
27% of students have achieved math proficiency (compared to the 33% CA state average), while 71% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Los Altos High School?
The graduation rate of Los Altos High School is 98%, which is higher than the California state average of 87%.
How many students attend Los Altos High School?
1,574 students attend Los Altos High School.
What is the racial composition of the student body?
90% of Los Altos High School students are Hispanic, 6% of students are Asian, 3% of students are White, and 1% of students are Two or more races.
What is the student:teacher ratio of Los Altos High School?
Los Altos High School has a student ration of 23:1, which is higher than the California state average of 21:1.
What grades does Los Altos High School offer ?
Los Altos High School offers enrollment in grades 9-12
What school district is Los Altos High School part of?
Los Altos High School is part of Hacienda La Puente Unified School District.
School Reviews
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