Rancho Cucamonga's Los Osos High School is a Public School Serving students in Grades 09-12.
40.86% of students at this school are White, non-Hispanic
| Grades Offered | Grades 09-12 |
| Total Students | 3250 |
| Student:Teacher ratio | 29:1 |
| Gender % | 51.32 % Male / 48.68 % Female |
| Total Classroom Teachers | 113.45 |
| Student Population at Los Osos High School by Grade | |
| Magnet School | |
| Charter School | |
| Shared School | |
| Title 1 Eligible |