Serving 2,759 students in grades 9-12, Los Osos High School ranks in the top 20% of all schools in California for overall test scores (math proficiency is top 20%, and reading proficiency is top 20%).
The percentage of students achieving proficiency in math is 52% (which is higher than the California state average of 33%). The percentage of students achieving proficiency in reading/language arts is 81% (which is higher than the California state average of 47%).
The student:teacher ratio of 25:1 is higher than the California state level of 21:1.
Minority enrollment is 73% of the student body (majority Hispanic), which is lower than the California state average of 80% (majority Hispanic).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 2,759 students
- Student:Teacher Ratio: 25:1
- Minority Enrollment: 73%
- Graduation Rate: 96% (Top 10% in CA)
- Overall Testing Rank: Top 20%
- Math Proficiency: 52% (Top 20%)
- Reading Proficiency: 81% (Top 5%)
- Science Proficiency: 35% (Top 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Los Osos High School ranks among the top 20% of public schools in California for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Graduation Rate
Diversity
School Overview
Los Osos High School's student population of 2,759 students has declined by 9% over five school years.
The teacher population of 111 teachers has declined by 9% over five school years.
Grades Offered
Grades 9-12
Total Students
2,759 students
Gender %
Total Classroom Teachers
111 teachers
Students by Grade
School Rankings
Los Osos High School ranks within the top 20% of all 9,602 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Los Osos High School is 0.71, 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
#1005 out of 9602 schools
(Top 20%)
(Top 20%)
Math Test Scores (% Proficient)
52%
33%
Reading/Language Arts Test Scores (% Proficient)
81%
47%
Science Test Scores (% Proficient)
35%
29%
Student : Teacher Ratio
25:1
21:1
American Indian
n/a
1%
Asian
22%
12%
Hispanic
41%
56%
Black
6%
5%
White
27%
20%
Hawaiian
n/a
n/a
Two or more races
4%
6%
All Ethnic Groups
Graduation Rate
96%
87%
Eligible for Free Lunch
31%
54%
Eligible for Reduced Lunch
3%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Los Osos High School's ranking?
Los Osos High School is ranked #1005 out of 9,602 schools, which ranks it among the top 20% of public schools in California.
What schools are Los Osos High School often compared to?
Los Osos High Schoolis often viewed alongside schools like Rancho Cucamonga High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
52% of students have achieved math proficiency (compared to the 33% CA state average), while 81% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Los Osos High School?
The graduation rate of Los Osos High School is 96%, which is higher than the California state average of 87%.
How many students attend Los Osos High School?
2,759 students attend Los Osos High School.
What is the racial composition of the student body?
41% of Los Osos High School students are Hispanic, 27% of students are White, 22% of students are Asian, 6% of students are Black, and 4% of students are Two or more races.
What is the student:teacher ratio of Los Osos High School?
Los Osos High School has a student ration of 25:1, which is higher than the California state average of 21:1.
What grades does Los Osos High School offer ?
Los Osos High School offers enrollment in grades 9-12
What school district is Los Osos High School part of?
Los Osos High School is part of Chaffey Joint Union High School District.
School Calendar
View the Los Osos High School below.
School Reviews
5 5/1/2012
Oustanding, both of my children attended this school
Review Los Osos High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
Segregation in K-12 Education: Post-Revolutionary War Era (1776-1865)
Step into the Post-Revolutionary War Era and explore the landscape of education in America during this transformative period. Journey through the tumultuous Reconstruction Era, a time of hope and immense challenges in the wake of the Civil War. Discover the resilience and determination of marginalized communities in establishing independent schools and advocating for educational equality amidst the challenges of this pivotal time in American public education.
Understanding the Consequences of Banning Books in K-12 Education
Explore the historical and contemporary issues surrounding the banning of books in public K-12 schools. Discover how parental guidance can serve as a more effective educational strategy, fostering critical thinking and empathy while respecting the freedom to read.
December 16, 2024
Personalized Learning: Revolutionizing Education for the 21st CenturyExplore the revolutionary approach of Personalized Learning in K-12 education. This article discusses the benefits, challenges, and potential of tailoring education to individual student needs, incorporating technology and adaptive learning methods to prepare students for the 21st century.
