| Mountainside High School | |
| Streetaddress: | 12500 SW 175th Avenue |
| Zipcode: | 97007 |
| Country: | United States |
| Coordinates: | 45.4266°N -122.8544°W |
| Campus: | Suburban |
| Principal: | Natalie Labossiere[1] |
| Grades: | 9–12 |
| Students: | 1,758 (2022-2023)[2] |
| Ratio: | 22.27 |
| Teaching Staff: | 78.95 (FTE) |
| Team Name: | Mavericks |
| Colors: | Black, Silver, and Columbia Blue |
| Established: | 2017 |
| Homepage: | Mountainside High School |
| Newspaper: | The Peak |
| Feeder Schools: | Conestoga MS, Highland Park MS, Mountain View MS |
Mountainside High School (MHS) is the newest of one of six comprehensive high schools in Beaverton, Oregon.
In 2014, a $680 million bond measure was passed which would help fund 27 projects in the Beaverton School District. Close to $158 million of the $680 million bond was used to build Mountainside High School.[3] [4]
The school opened only for Freshmen and Sophomores for the 2017-2018 school year and would have their first graduating class in 2020.[5] [6]
In 2023, 95% of the school's seniors received a high school diploma. Of 433 students, 413 graduated and 20 dropped out.[7]
Mountainside High School athletic teams compete in the OSAA 6A-2 Metro League, along with the other Beaverton schools.