Mountainside High School
🇺🇸 Official data · 2025Beaverton, Oregon 97007 · Beaverton SD 48J
#11 of 215 high schools in Oregon
#4435 of 16,910 nationally
About Mountainside High School
Mountainside High School is a public high located in Beaverton, in the Beaverton SD 48J school district of Oregon, United States. It caters for Grades 9–12. In 2025 it enrolled 1,741 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 65.4 out of 100, placing it in the top 50% of high schools in United States and 11th of 215 ranked high schools in Oregon. Its strongest component is reading proficiency (93th percentile), and its weakest is students per teacher (13th percentile).
Other published figures: enrollment 1,741.
There are 34 schools in Beaverton; Mountainside High School ranks 8th of 34 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)61%
- Reading proficiency (30%)88%
- Community advantage (fewer free/reduced-price lunch) (25%)50.3%
- Students per teacher (15%)21.2
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Mountainside High School by the official sources.
- Enrollment
- 1,741
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 50.3%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 21.2
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 88%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 61%
- Share of tested students proficient or above (all students, all grades).
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Schools near Mountainside High School
Closest schools by straight-line distance, with their Success Index (US).
Scholls Heights Elementary School
Beaverton · Public elementary · Grades K–5
597 students · 863 m away
Nancy Ryles Elementary School
Beaverton · Public elementary · Grades K–5
447 students · 2.2 km away
Art Rutkin Elementary School
Tigard · Public elementary · Grades PK–5
131 students · 2.4 km away
Sexton Mountain Elementary School
Beaverton · Public elementary · Grades K–5
431 students · 3.8 km away
Alberta Rider Elementary School
Tigard · Public elementary · Grades K–5
367 students · 3.8 km away
Mary Woodward Elementary School
Tigard · Public elementary · Grades K–5
417 students · 4.1 km away
Hiteon Elementary School
Beaverton · Public elementary · Grades K–5
486 students · 4.1 km away
Cooper Mountain Elementary School
Beaverton · Public elementary · Grades K–5
384 students · 4.2 km away
Deer Creek Elementary School
Tigard · Public elementary · Grades K–5
534 students · 4.3 km away
Errol Hassell Elementary School
Beaverton · Public elementary · Grades PK–5
334 students · 4.4 km away
Similar schools
Public high schools in Oregon with a comparable Enrollment.
Centennial High School
Gresham · Public high · Grades 9–12
1,731 students
North Medford High School
Medford · Public high · Grades 9–12
1,721 students
Sprague High School
Salem · Public high · Grades 9–12
1,712 students
Tigard High School
Tigard · Public high · Grades 9–12
1,771 students
Hermiston High School
Hermiston · Public high · Grades 9–12
1,705 students
Tualatin High School
Tualatin · Public high · Grades 9–12
1,687 students
Frequently asked questions
Is Mountainside High School a good school?
Mountainside High School has a Success Index (US) of 65.4 out of 100 (Top 50% of high schools in United States) and ranks #11 of 215 in Oregon. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Mountainside High School rank in Oregon?
Mountainside High School ranks #11 of 215 high schools in Oregon and #4435 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Mountainside High School?
Mountainside High School had 1,741 students in 2025.
Is Mountainside High School a elementary school or a high school?
Mountainside High School is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Mountainside High School?
There are 10 schools within 15 km of Mountainside High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.