Grossmont High School
| Name | Grossmont High School |
| Grades | Class 09 to Class 12 |
| Address | PO Box 1043 |
| City | La Mesa |
| School District | Grossmont Union High |
| County | San Diego County |
| Zipcode | 91944-1043 |
| Phone No. | (619)668-6000 |
| State | California |
| Suburb | Large |
| Students | 2305 |
| Teachers | 90 |
| Student Teacher Ratio | 25.5 students per teacher |
| Charter School | No |
| Magnet School | N/A |
Grossmont High School is located at PO Box 1043 in La Mesa city of San Diego County county in California. This school comes under Grossmont Union High. You can call them at (619)668-6000 for more details. This is not a magnet school. Total two thousand three hundred five students from class 09 to class 12 study in this school who are taught by ninety teachers. This is not a charter school. The student teacher ratio of this school is 25.5.