Los Osos High

Los Osos High

Public High School | Grade 9-12
6001 Milliken Ave,  Rancho Cucamonga, CA
Chaffey Joint Union High School District
3.9
4.6
2,867 Students
A
Niche Grade

School Details

Head of School
Susan Petrocelli
Student Teacher Ratio
25:1
Average SAT Score
1250
Average ACT Score
28
Math Proficiency
52%
Reading Proficiency
81%
Average GPA
3.63
Graduation Rate
95%

Niche Grade

A
Academics
A
Teachers
A
College Prep
B
Administration
B-
Resources/Facilities
B
Clubs and Activities
B-
Sports
B-
Food
Source: Niche
Niche Grades

Niche grades and rankings are calculated using dozens of public data sets and millions of reviews. Niche data scientists and user researchers rigorously analyze data and user opinions to assess the key aspects of K-12 Schools, Colleges, and Places to Live. Every month, millions of students and families use the Niche grades and report cards to find the right school or neighborhood.

Niche Grade Details

Academics
Average GPA
3.63
Reading Proficiency
81%
Math Proficiency
52%
Teachers
Student Teacher Ratio
25:1
Teachers
111
Full Time Teachers
111
Teachers in First or Second Year
9.7%
College Prep
Average SAT
1250
Math
630
Verbal
620
Average ACT
28
Math
28
English
28
Reading
29
Science
27
Number of AP Courses
17
AP Pass Rate
72.7%
AP Math Enrollment
High
AP Science Enrollment
Very High
Other AP Enrollment
Very Low
Clubs and Activities
Girls Athletic Participation
Low
Boys Athletic Participation
Low

GreatSchools Rating

Source: GreatSchools
GreatSchools Rating
The GreatSchools Rating helps parents compare schools within a state based on a variety of school quality indicators and provides a helpful picture of how effectively each school serves all of its students. Ratings are on a scale of 1 (below average) to 10 (above average) and can include test scores, college readiness, academic progress, advanced courses, equity, discipline and attendance data. We also advise parents to visit schools, consider other information on school performance and programs, and consider family needs as part of the school selection process.
View GreatSchools Rating Methodology

GreatSchools Rating Details

Test Scores

Math
28.2%
State Average
19.4%
Science
14.5%
State Average
11.2%
GreatSchools Test Scores Rating
GreatSchools
The Test Score Rating reflects annual state test results for this school compared with scores statewide.

Teachers and Staff

Students Per Counselor
422:1

Student Diversity

Male
50.1%
Female
49.8%
Hispanic
41.4%
White
24.5%
Asian
19.6%
Black
5.9%
Two or more races
4%
Filipino
3.4%
Native American
<1%
Pacific Islander
<1%

School Rankings

#159 Best Public HS in California
#198 Best College Prep Public HS in California
Source: Niche

Specialty School Programs

AP Programs Offered
Free/Reduced Lunch Offered
Athletics Program

Colleges Students are Considering

Students are most interested in or go on to attend these colleges.
University of California - Los Angeles 708 Students
University of California - Irvine 604 Students
University of California - San Diego 563 Students
University of California - Berkeley 457 Students
University of Southern California 420 Students
San Diego State University 380 Students
University of California - Riverside 330 Students
California State Polytechnic University - Pomona 317 Students
University of California - Santa Barbara 315 Students
University of San Diego 279 Students

What Students Want to Study

Niche users from this school are most interested in the following majors.
Biology 306 Students
Psychology 275 Students
Business 243 Students
Nursing 176 Students
Computer Science 149 Students
Pre-Medicine Studies 108 Students
Political Science and Government 83 Students
Kinesiology and Exercise Science 82 Students
Biochemistry and Molecular Biology 62 Students
Criminology 61 Students

This School’s Reviews

Niche Reviews
3.9 773 Reviews
4.0 Senior
12/31/2024
I have enjoyed my time at Los Osos High School. There are lots of opportunities for students and the school offers lots of AP classes.
5.0 Sophomore
10/26/2024
Most of the teachers at Los Osos are extremely supportive and genuinely want you to succeed. They provide many resources like tutoring and Saturday school to help you on your academic journey.
5.0 Alum
7/17/2024
I very much enjoyed my experience at Los Osos High school. I was involved in sports, jazz band, various clubs, and ASB and have found all of those experiences to be memorable. There are many things that make this school great, including its diversity, academic excellence, and student involvement. Overall, I would definitely recommend this school to anybody looking to get a well-rounded academic and social high school experience.
GreatSchools Reviews
4.6 32 Reviews
5.0 parent
4/21/2019
My children were well prepared to go to top colleges. One of my kids enrolled in Stanford, the other at UC Davis and my friends kids went to UCLA and UC Irvine last year. So very well prepared and this school has the most taking AP classes and passing the AP tests. Many kids come in from other schoo...
5.0 parent
2/9/2019
I could not have picked a better school for my children. I have had three attend Los Osos and all 3 have had happy and healthy experiences here! What more can a parent ask for?
2.0 parent
6/15/2017
I found this school not to be supportive.counselors are negative and did not support our goals. Did not have experience to guide child to a ivy league
1.0 student
11/29/2016
Staff only cares about the progression of themselves and not the students

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Los Osos High is a public school for students in grades 9-12 in Rancho Cucamonga, CA and is served by the Chaffey Joint Union High School District in California. Annual tuition is $0. The school has a total enrollment of 2,867 and maintains a student-teacher ratio of 25:1. Academic records show that 52% of students achieve proficiency in math, and 81% are proficient in reading. Los Osos High has received feedback and ratings, with a Niche grade of A and a GreatSchools Rating of 9 out of 10. The average GPA is 3.63, the graduation rate is 95%, and average standardized test scores include an SAT score of 1250 and an ACT score of 28. The average home value in this area is $1,139,665. Discover additional schools in the area, like Rancho Cucamonga High School, Etiwanda High, Alta Loma High School, and more. Learn more about what Rancho Cucamonga has to offer, and browse homes for sale and for rent near Los Osos High.

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