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About Us

Mountainside High School is the Beaverton School District's 6th comprehensive high school. It opened in the fall of 2017 with freshmen and sophomore classes and adds a new freshman class each year, making the first graduation scheduled for spring of 2020. Mountainside is expected to serve up to 2,200 students in grades 9-12.

Mountainside High School
12500 SW 175th Avenue
Beaverton, OR 97007

Main Office: 503-356-3500
Attendance: 503-356-3501
Fax:  503-356-3505

School Hours: 7:45 a.m. - 2:30 p.m.
Office Hours: 7:00 a.m. - 3:30 p.m.