Onalaska High School
| Name | Onalaska High School |
| Grades | Class 09 to Class 12 |
| Address | 540 Carlisle Ave. |
| City | Onalaska |
| School District | Onalaska School District |
| County | Lewis County |
| Zipcode | 98570-9604 |
| Phone No. | (360)978-4113 |
| State | Washington |
| Rural | Distant |
| Students | 244 |
| Teachers | 16 |
| Student Teacher Ratio | 15.4 students per teacher |
| Charter School | No |
| Magnet School | No |
Onalaska High School is located at 540 Carlisle Ave. in Onalaska city of Lewis County county in Washington. This school comes under Onalaska School District. You can call them at (360)978-4113 for more details. This is not a magnet school. Total two hundred forty four students from class 09 to class 12 study in this school who are taught by sixteen teachers. This is not a charter school. The student teacher ratio of this school is 15.4.