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Mountainside High School

12500 SW 175th Ave, Beaverton, OR 97007

ASchola Grade
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Grades
9–12
High
Students
1,741
Enrolled 2024–25
Students per teacher
21.1 : 1
Full-time teachers
District
Beaverton SD 48J
Washington County

Schola Grade A · Excellent

Letter grade (A–F) · compared with 198 Oregon high schools · How we grade
Test scores60% proficient in math & reading
96thpercentile
Equity60% of low-income students proficient
96thpercentile
Attendance39% chronically absent
78thpercentile
Graduation rate95% graduate in 4 years
86thpercentile
College readinessAt least 37% take AP, IB or dual-enrollment courses
79thpercentile
Class size21.1 students per teacher
26thpercentile

Percentiles compare this school with other Oregon high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Mountainside High School

Mountainside High School is a public high school in Beaverton, Oregon, serving grades 9–12. It is part of Beaverton SD 48J. The school is located in a rural area near a town in Washington County.

In the 2024–25 school year, 1,741 students were enrolled, with about 21.1 students for every full-time teacher. That ratio is larger than the typical Oregon high school (17.4 students per teacher). Its Schola Grade is A (excellent), compared with 198 Oregon high schools.

Grades & enrollment

Students per grade, 2024–25Grades 9–12

Location & nearby schools

12500 SW 175th Ave
Beaverton, OR 97007
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School details

Type
Public School · What this means
Level
High
Grades offered
9–12
Enrollment (2024–25)
1,741 students
Students per teacher
21.1 to 1
Charter school
No
Magnet school
No
Virtual learning
Offers virtual courses
Locale
Rural — Fringe
School district
Beaverton SD 48J
County
Washington County
NCES school ID
410192001855

Schools near Mountainside High School

All 48 schools in Beaverton →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.