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
Enrollment
1,722
Student-Teacher
22.1:1
Score
5.8
Grades
9th – 12th
Updated
2022-23
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
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Mountainside High School — Students at Mountainside High School score 43% proficient, which is below what's typical for similar communities (expected: 46%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
22.5%
Students qualifying for federal meal assistance
Test Scores OR OSAS (2024-25)
Based on 8 test records from OR state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* 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.
Funding & Resources
Programs & Offerings
Data as of 2020-21 · Source: CRDC via Urban Institute · Learn more
Performance Trends
Math proficiency has declined from 61% (2019) to 24.9% (2025). Reading/ELA proficiency has declined from 88% (2019) to 60.9% (2025).
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.
Neighborhood Context
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
- Phone
- (503) 356-3500
- Data Year
- 2023–2024
Resources & Links
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 methodologyRelated reading
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