Ontario High School
| Name | Ontario High School |
| Grades | Class 09 to Class 12 |
| Address | 901 W. Francis St. |
| City | Ontario |
| School District | Chaffey Joint Union High |
| County | San Bernardino County |
| Zipcode | 91762-6214 |
| Phone No. | (909)988-7411 |
| State | California |
| City | Midsize |
| Students | 2322 |
| Teachers | 103 |
| Student Teacher Ratio | 22.5 students per teacher |
| Charter School | No |
| Magnet School | N/A |
Ontario High School is located at 901 W. Francis St. in Ontario city of San Bernardino County county in California. This school comes under Chaffey Joint Union High. You can call them at (909)988-7411 for more details. This is not a magnet school. Total two thousand three hundred twenty two students from class 09 to class 12 study in this school who are taught by one hundred three teachers. This is not a charter school. The student teacher ratio of this school is 22.5.