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Average

#775 of 1,226 schools in OR

Mountainside High School

High School · Beaverton SD 48J

12500 SW 175th Ave, Beaverton, OR 97007

Enrollment

1,722

Student-Teacher

22.1:1

Score

5.8

Grades

9th – 12th

Updated 2022-23

How this school compares

In Beaverton

#21 of 35

public schools

Oregon high schools

#111 of 250

In district

#39 of 56

Beaverton SD 48J

Academic performance

7.1 / 10

Strong

About Mountainside High School

Mountainside High School serves 1,722 students in grades 9-12 in Beaverton, Oregon, with a student-teacher ratio of 22.1 to 1 across 78 full-time equivalent teachers. The school demonstrates strong academic performance, earning a 7.1 out of 10 rating from MySchoolScout and ranking #274 out of 1,231 Oregon high schools, placing it in the 78th percentile statewide. Students show solid achievement with 62% proficient or above in English Language Arts and 57% proficient or above in mathematics.

The school draws from an affluent and well-educated community, where the median household income reaches $110,123 and 53% of residents hold bachelor's degrees or higher. With a low poverty rate of 5.8% and median home values of $544,100, the surrounding ZIP code of 97007 reflects a stable, prosperous area that supports educational achievement. Located in a rural setting near town, Mountainside High School offers students the benefits of a more spacious, natural environment while maintaining access to suburban amenities and resources in the greater Beaverton area.

What Parents Should Know

The student-teacher ratio at Mountainside High School is 22.1:1, which is higher than the national average. This may mean larger class sizes, so parents should ask about classroom support, teaching assistants, and how the school differentiates instruction for students who need extra help.

Located in a rural area, Mountainside High School may involve longer commutes for some families. Rural schools often serve as community anchors and may have smaller class sizes, but parents should consider transportation logistics, after-school program availability, and access to specialized services.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress1.7Significantly Below Average25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data4
Annual Change-5.52 pts/yr
Data Period2019–2025
TrendDeclining
Academics7.1Very Good25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency24.9%
Reading/ELA Proficiency60.9%
Math vs. State Avg-6.9 pts
Reading vs. State Avg+17.9 pts
Overall Proficiency43%
Expected (poverty-adj.)46%
vs. Expected-3.6 pts
Adjusted Percentile58th
College Readiness9.9Exceptional30%
Graduation rates, AP course participation, and IB availability.
View breakdown
IB ProgramYes
Resources & Environment3.3Fair20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio22.1:1
Per-Pupil Spending$15,178

Mountainside High School — Students at Mountainside High School score 43% proficient, which is below what's typical for similar communities (expected: 46%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

22.5%

Students qualifying for federal meal assistance

Test Scores OR OSAS (2024-25)

Math Proficiency 54.5%
School
State
31.8%
ELA Proficiency 71.5%
School
State
43.0%

Based on 8 test records from OR state assessments. About our data

Proficiency Trend

↓ Declining

Average proficiency (% at or above grade level) across Math & ELA over time.

2019
Math
61%
ELA
88%
2021*
Math
75%
ELA
75%
2022
Math
57%
ELA
62%
2025
Math
24.9%
ELA
60.9%

* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.

Source: EdFacts (NCES) and state assessment data. Growth score: 1.7/10.

How Mountainside High School Compares

See how Mountainside High School performs across key quality dimensions compared to state benchmarks.

Overall Score
5.8/10
37th percentile in OR
Academic
7.1/10
7.1/10
Growth
1.7/10
Below average
Environment
3.3/10
Below average

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
23%
Teaching Staff
22:1 student-teacher ratio
78 teachers

Programs & Offerings

AP/IB Programs IB Programme
·714 IB enrolled·CRDC 2020-21

Data as of 2020-21 · Source: CRDC via Urban Institute · Learn more

Location

12500 SW 175th Ave, Beaverton, OR 97007

Nearby Alternatives

Families considering Mountainside High School may also want to explore other high schools in the area. Southridge High School (rated 6.6/10, 2.8 miles away), which scores slightly higher. Additionally, Aloha High School (rated 5.3/10, 4.0 miles away), with a comparable rating. For more schools in Beaverton, see our Beaverton schools guide .

Nearby Schools

20 within 3.7 mi
School Distance Rating
Scholls Heights Elementary School Beaverton 0.5 mi 6.5
Nancy Ryles Elementary School Beaverton 1.4 mi 5.9
SOUTHWEST CHRISTIAN SCHOOL Beaverton 2.0 mi 5.4
Sexton Mountain Elementary School Beaverton 2.4 mi 6.0
Cooper Mountain Elementary School Beaverton 2.6 mi 8.1
Errol Hassell Elementary School Beaverton 2.7 mi 5.7
Hiteon Elementary School Beaverton 2.5 mi 7.6
Alberta Rider Elementary School Tigard 2.4 mi 4.6
WESTGATE CHRISTIAN SCHOOL Tigard 2.5 mi 8.3
Deer Creek Elementary School Tigard 2.7 mi 7.3
Hazeldale Elementary School Aloha 3.2 mi 5.9
Chehalem Elementary School Beaverton 3.5 mi 7.8
Mary Woodward Elementary School Tigard 2.5 mi 6.9
Mountain View Middle School Beaverton 3.6 mi 5.0
Southridge High School Beaverton 2.8 mi 6.6
Highland Park Middle School Beaverton 3.4 mi 5.6
Conestoga Middle School Beaverton 2.9 mi 5.0
Aloha-Huber Park School Beaverton 3.9 mi 4.0
Aloha High School Beaverton 4.0 mi 5.3
Fir Grove Elementary School Beaverton 3.7 mi 8.0

Neighborhood Census ACS (2019-2023)

Census data for ZIP 97007 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$116,667

Median Home Value

$582,700

Median Rent

$1,792/mo

Population

48,081

College Educated

53.7%

Homeownership

74.8%

Avg Commute

26.2 min

Poverty Rate

5.8%

Median Age

41

Community Profile

The community surrounding Mountainside High School has a median household income of $116,667. It is a well-educated community where 54% of adults hold a bachelor's degree or higher. The median home value in the area is $582,700, with a median rent of $1,792/month. The local poverty rate of 5.8% is relatively low. The average commute for residents is 26 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
North Medford High School Medford, OR 5.8
Roosevelt High School Portland, OR 5.7
Bend Senior High School Bend, OR 5.9
Newberg Senior High School Newberg, OR 5.6
West Linn High School West Linn, OR 6.0
Century High School Hillsboro, OR 5.5

Frequently Asked Questions

Common questions about Mountainside High School

What grades does Mountainside High School serve?

Mountainside High School serves students in grades 9th through 12th.

How many students attend Mountainside High School?

Mountainside High School has an enrollment of approximately 1,722 students.

What is the student-teacher ratio at Mountainside High School?

The student-teacher ratio at Mountainside High School is 22.1:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Mountainside High School rank in OR?

Mountainside High School is ranked #775 out of 1,226 schools in OR.

What is Mountainside High School's MySchoolScout rating?

Mountainside High School has a composite rating of 5.8 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.

What are the test scores at Mountainside High School?

Based on the most recent state assessment data, Mountainside High School has 54.5% math proficiency and 71.5% reading/ELA proficiency.

Is Mountainside High School a charter school?

No, Mountainside High School is not a charter school. It is a traditional public school operated by the local school district.

Is Mountainside High School a Title I school?

No, Mountainside High School is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Mountainside High School?

22.5% of students at Mountainside High School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.

11 schools nearby View map →

Neighborhood Context

Walk Score
22 Car-Dependent
Transit Score
0 Minimal Transit
Bike Score
40 Somewhat Bikeable
City Safety
High (3,047/100K)

Powered by Walk Score

FBI UCR 2024. City-level (Beaverton). Data >1 year old.

Quick Facts NCES CCD (SY 2022-23)

Grades
9th – 12th
Enrollment
1,722
Student-Teacher Ratio
22.1:1
Teachers (FTE)
78
Free/Reduced Lunch
22.5%
Type
regular
Setting
Fringe Rural
County
Washington County
Data Year
2023–2024

District

Beaverton SD 48J
District Enrollment
38,049
Schools in District
56
Per-Pupil Spending
$15,998
District Rank
#39 of 56

How We Rate Schools

Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.

Read our full methodology

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