Los Osos High
Best High School in California#128
|Rating||8 out of 10|
|Grades||9 to 12th grade|
|School District||Chaffey Joint Union High|
|Location||6001 Milliken Ave.
Rancho Cucamonga, CA 91737
Los Osos High has an academic rating well above the average for California high schools based on its high test performance and high AP course participation. It is ranked 128th in the best public high schools in California.
The Los Osos High student body is predominantly White with a significant Hispanic population and has very high racial diversity.
|Native American Indian||0.4%||14|
|Hawaiian Pacific Inlander||0.6%||18|
|Two or more races||1.6%||50|
vs. other California high schoolsUpper 15.5%
18.1% percent of the school's students are eligible for free lunch under the National School Lunch Program compared to the California high school median of 48.5%. By this measure, Los Osos High students are largely upper income and rank 197th in California for high school student family income.
Enrollment by Grade
State Standardized Test Performance
Rank in California175th
Rating8 out of 10
Students at Los Osos High scored an average 62% of students proficient for math and reading as tested by the California Department of Education. Performance is well above the state high school median of 42% proficiency and places the school's test performance in the top 14.9% of California high schools.
Test Proficiency By Gender
|Gender||Math Proficient||Reading Proficient|
State Test Proficiency by Subgroup
|Subgroup||Math Proficient||Reading Proficient|
|Asian & Pacific Islander||80% to 84%*||80% to 84%*|
|Black||35% to 39%*||65% to 69%*|
|Hispanic||40% to 44%*||60% to 64%*|
|Multiracial||50% or more*||50% or more*|
|White||50% to 54%*||75% to 79%*|
|With Disabilites||10% or less*||20% to 29%*|
|Limited English||less than 50%*||less than 50%*|
*Indicates statistic has been anonymized to protect student privacy.
College Admission Test Scoring
Average SAT Score1131
The average SAT score for Los Osos High students in 2016 was 1131.
College Admission Test Participation
Upperclassmen taking ACT or SAT44%
Rank in California193rd
Rating8 out of 10
705 out of 1,590 junior and senior of students took either the ACT or SAT test (44%). College admission testing participation is well above the California median rate of 29% and in the top 21% for participation.
AP Course and Test Performance
AP Class Enrollment Rate29%
AP Pass Rank in California296th
AP Pass Rate Rating6 out of 10
Los Osos High offers 22 AP courses. 29 percent of grade nine through twelve students are enrolled in at least one AP class. The AP participation rate is in the 76% percentile and well above the median AP enrollment rate for all California schools of 21%. Los Osos High had 501 taking AP exams with a 334 passing at least one exam. The AP pass rate is in the 67% percentile and somewhat above the California state median of 55 percent.
|AP Test Pass Rate||67%||55%|
|Students enrolled in an AP class||29%||21%|
|AP Math Enrollment Rate||5%|
|AP Science Enrollment Rate||8%|
|AP Other Enrollment Rate||28%|
|AP Courses Offered||22|
|Overall Chronic Absenteeism Rate||9%||14%|
|Female Chronic Absenteeism Rate||10%|
|Male Chronic Absenteeism Rate||8%|
Police Referral Rate
Police Arrest Rate
In-School Suspension Rate
Out-of-School Suspension Rate
Los Osos High
6001 Milliken Ave.
Rancho Cucamonga, CA
Chaffey Joint Union High