Los Osos High School
Los Osos High School is a public high school in Rancho Cucamonga, CA, serving grades 9–12, rated A, with 2,759 students and a 25.8:1 student-teacher ratio.
In 2024-2025, the share of students meeting the state standard was 79% in English Language Arts, 51% in Math and 38% in Science.
ATopHap school rating
- Rating
- A
- Grades
- 9–12
- Enrollment
- 2,759
- Students per teacher
- 25.8:1
- Level
- High
- Type
- Public · Regular
2024-2025 testing year
State test results
Share of students meeting or exceeding the state standard.
English Language Arts79%
Math51%
Science38%
Academics and programs
- AP courses offered
- 22
- Open enrollment
- No
Student body
Hispanic41%
White24%
Asian23%
Black6%
Two or more races5%
Native American0%
Pacific Islander0%
- Male / female
- 50% / 50%
- Free or reduced lunch
- 44%
- Enrollment change vs prior year
- -7.1%
- Prior-year enrollment
- 2,970
Homes assigned to this school
12,621 homes in TopHap's records are assigned to Los Osos High School. These 40 are sampled evenly down the value ranking, so they span the whole zone rather than just its most expensive streets.
- 10039 Santina StRancho Cucamonga, CA 917375 bd · 5 ba · 7,917 ft² · built 2014$5.3M
- 5663 Grata Vista CtRancho Cucamonga, CA 917376 bd · 5.5 ba · 5,160 ft² · built 2007$2.1M
- 12660 Encino CtRancho Cucamonga, CA 917394 bd · 4.5 ba · 4,610 ft² · built 2007$1.8M
- 10157 Hillside RdRancho Cucamonga, CA 917374 bd · 4.5 ba · 3,903 ft² · built 2002$1.6M
- 5760 Sycamore CtRancho Cucamonga, CA 917375 bd · 4 ba · 3,982 ft² · built 2004$1.5M
- 12228 Split Rein DrRancho Cucamonga, CA 917395 bd · 3.5 ba · 3,980 ft² · built 2003$1.4M
- 12706 N Bend CtRancho Cucamonga, CA 917395 bd · 5.5 ba · 4,372 ft² · built 2006$1.4M
- 10430 Almond StRancho Cucamonga, CA 917373 bd · 2.5 ba · 3,003 ft² · built 1989$1.3M
- 5055 Carriage RdRancho Cucamonga, CA 917374 bd · 3 ba · 3,111 ft² · built 2002$1.3M
- 5485 Cimarron CtRancho Cucamonga, CA 917395 bd · 3 ba · 2,871 ft² · built 1996$1.3M
- 9055 Camellia CtRancho Cucamonga, CA 917374 bd · 2.5 ba · 2,686 ft² · built 1974$1.2M
- 6356 Stable Falls AveRancho Cucamonga, CA 917394 bd · 3 ba · 3,816 ft² · built 2014$1.2M
- 12401 Green Tree DrRancho Cucamonga, CA 917394 bd · 2.5 ba · 2,980 ft² · built 2003$1.2M
- 12641 Arena DrRancho Cucamonga, CA 917394 bd · 3 ba · 3,419 ft² · built 1998$1.1M
- 10154 Sun Valley DrRancho Cucamonga, CA 917374 bd · 2 ba · 2,192 ft² · built 1987$1.1M
- 9028 Citation CtRancho Cucamonga, CA 917374 bd · 3 ba · 2,577 ft² · built 1975$1.1M
- 6250 Morning PlRancho Cucamonga, CA 917374 bd · 3 ba · 2,798 ft² · built 1992$1.1M
- 6411 Caledon PlRancho Cucamonga, CA 917376 bd · 2.5 ba · 2,850 ft² · built 1998$1M
- 5517 Rock Creek RdRancho Cucamonga, CA 917395 bd · 3 ba · 2,326 ft² · built 1996$986K
- 10798 Zinfandel StRancho Cucamonga, CA 917374 bd · 2.5 ba · 1,922 ft² · built 1989$949K
- 11210 Baltimore DrRancho Cucamonga, CA 917014 bd · 3 ba · 2,543 ft² · built 1990$916K
- 5488 Eastwood AveRancho Cucamonga, CA 917373 bd · 2 ba · 1,830 ft² · built 1978$883K
- 6029 San Rafael CtRancho Cucamonga, CA 917374 bd · 3 ba · 2,061 ft² · built 1994$860K
- 10769 Champagne RdRancho Cucamonga, CA 917374 bd · 2.5 ba · 1,922 ft² · built 1989$844K
- 11659 Mount Baker CtRancho Cucamonga, CA 917373 bd · 2.5 ba · 1,542 ft² · built 1988$826K
- 10319 Mignonette StRancho Cucamonga, CA 917014 bd · 2 ba · 1,874 ft² · built 1977$811K
- 10389 Lavender CtRancho Cucamonga, CA 917373 bd · 2.5 ba · 1,548 ft² · built 1988$799K
- 10126 Lemon AveRancho Cucamonga, CA 917374 bd · 2 ba · 1,750 ft² · built 1964$786K
- 6756 Dakota AveRancho Cucamonga, CA 917014 bd · 2 ba · 1,620 ft² · built 1977$774K
- 6987 Halstead AveRancho Cucamonga, CA 917014 bd · 2 ba · 1,645 ft² · built 1979$763K
- 10915 Mc Lennan StRancho Cucamonga, CA 917013 bd · 2.5 ba · 1,841 ft² · built 1987$750K
- 11698 Mount Jefferson DrRancho Cucamonga, CA 917373 bd · 2.5 ba · 1,484 ft² · built 1988$736K
- 10436 Hamilton StRancho Cucamonga, CA 917014 bd · 2 ba · 1,448 ft² · built 1977$722K
- 11522 Mount Baldwin CtRancho Cucamonga, CA 917373 bd · 2.5 ba · 1,472 ft² · built 1986$707K
- 10461 Monte Vista StRancho Cucamonga, CA 917013 bd · 2 ba · 1,204 ft² · built 1977$693K
- 6251 Gamay CtRancho Cucamonga, CA 917373 bd · 2 ba · 1,364 ft² · built 1988$671K
- 7284 Parkside PlRancho Cucamonga, CA 917013 bd · 2 ba · 1,272 ft² · built 1985$643K
- 6643 Brissac PlRancho Cucamonga, CA 917373 bd · 2 ba · 1,240 ft² · built 1988$588K
- 9882 Highland AveRancho Cucamonga, CA 917372 bd · 1.8 ba · 915 ft² · built 1988$414K
- 7107 Hermosa AveRancho Cucamonga, CA 91701
School details
- Address
- 6001 Milliken Ave, Rancho Cucamonga, CA 91737
- Phone
- (909) 477-6900
- Website
- cjuhsd.net
- Setting
- Suburb - Large
- Status
- Operational
- NCES ID
- 060816010605
School district
Chaffey Joint Union High School District
- District rating
- B
- Schools
- 11
- Students
- 22,116
- Spending per student
- $16,414
- Teachers (FTE)
- 913
- Grades
- 09–12
Other schools in this district
- Alta Loma High SchoolGrades 9–12 · 2,386 studentsA-
- Chaffey Community DayGrades 9–12 · 20 students
- Chaffey District Online High SchoolGrades 9–12 · 93 studentsA
- Chaffey High SchoolGrades 9–12 · 3,127 studentsC-
- Colony High SchoolGrades 9–12 · 2,109 studentsC
- Etiwanda High SchoolGrades 9–12 · 3,446 studentsA
- Montclair High SchoolGrades 9–12 · 2,515 studentsB-
- Ontario High SchoolGrades 9–12 · 1,994 studentsC+
- Rancho Cucamonga High SchoolGrades 9–12 · 3,221 studentsA-
- Valley View High (Continuation)Grades 9–12 · 370 studentsD