Diamond Bar High School
| Name | Diamond Bar High School |
| Grades | Class 09 to Class 12 |
| Address | 21400 Pathfinder Rd. |
| City | Diamond Bar |
| School District | Walnut Valley Unified |
| County | Los Angeles County |
| Zipcode | 91765-2747 |
| Phone No. | (909)594-1405 |
| State | California |
| Suburb | Large |
| Students | 2544 |
| Teachers | 100 |
| Student Teacher Ratio | 25.5 students per teacher |
| Charter School | No |
| Magnet School | N/A |
Diamond Bar High School is located at 21400 Pathfinder Rd. in Diamond Bar city of Los Angeles County county in California. This school comes under Walnut Valley Unified. You can call them at (909)594-1405 for more details. This is not a magnet school. Total two thousand five hundred forty four students from class 09 to class 12 study in this school who are taught by one hundred teachers. This is not a charter school. The student teacher ratio of this school is 25.5.