Ontario High School
🇺🇸 Official data · 2025Ontario, Oregon 97914 · Ontario SD 8C
#176 of 215 high schools in Oregon
#13828 of 16,910 nationally
About Ontario High School
Ontario High School is a public high located in Ontario, in the Ontario SD 8C school district of Oregon, United States. It caters for Grades 9–12. In 2025 it enrolled 709 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 27.7 out of 100, placing it in the lower 50% of high schools in United States and 176th of 215 ranked high schools in Oregon. Its strongest component is reading proficiency (62th percentile), and its weakest is community advantage (fewer free/reduced-price lunch) (2th percentile).
Other published figures: enrollment 709.
There are 7 schools in Ontario; Ontario High School ranks 3rd of 5 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)17%
- Reading proficiency (30%)62%
- Community advantage (fewer free/reduced-price lunch) (25%)100%
- Students per teacher (15%)18.2
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 Ontario High School by the official sources.
- Enrollment
- 709
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 100%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 18.2
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 62%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 17%
- Share of tested students proficient or above (all students, all grades).
Free academic assessment
Is your child on grade level in reading and math?
Success Tutoring offers personalised English and math tutoring from Kindergarten to Grade 12. Start with a free online assessment and a clear plan for the year ahead.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Schools near Ontario High School
Closest schools by straight-line distance, with their Success Index (US).
Aiken Elementary School
Ontario · Public elementary · Grades 2–3
333 students · 504 m away
May Roberts Primary School
Ontario · Public elementary · Grades K–1
302 students · 675 m away
Ontario Middle School
Ontario · Public middle · Grades 6–8
471 students · 739 m away
Alameda Intermediate School
Ontario · Public elementary · Grades 4–5
355 students · 1.4 km away
Four Rivers Community School
Ontario · Charter other · Grades K–12
367 students · 1.6 km away
Treasure Valley Classical Academy
Fruitland · Charter other · Grades K–11
589 students · 5.2 km away
Fruitland High School
Fruitland · Public high · Grades 9–12
509 students · 5.5 km away
Payette High School
Payette · Public high · Grades 9–12
319 students · 5.9 km away
Fruitland Middle School
Fruitland · Public middle · Grades 5–8
467 students · 6.0 km away
Fruitland Elementary School
Fruitland · Public elementary · Grades PK–4
557 students · 6.1 km away
Similar schools
Public high schools in Oregon with a comparable Enrollment.
Scappoose High School
Scappoose · Public high · Grades 9–12
709 students
Henley High School
Klamath Falls · Public high · Grades 9–12
720 students
Arts and Communication Magnet Academy
Beaverton · Public high · Grades 6–12
690 students
Mazama High School
Klamath Falls · Public high · Grades 9–12
690 students
North Bend Senior High School
North Bend · Public high · Grades 9–12
690 students
Tillamook High School
Tillamook · Public high · Grades 9–12
729 students
Frequently asked questions
Is Ontario High School a good school?
Ontario High School has a Success Index (US) of 27.7 out of 100 (Lower 50% of high schools in United States) and ranks #176 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 Ontario High School rank in Oregon?
Ontario High School ranks #176 of 215 high schools in Oregon and #13828 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Ontario High School?
Ontario High School had 709 students in 2025.
Is Ontario High School a elementary school or a high school?
Ontario High School is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Ontario High School?
There are 10 schools within 15 km of Ontario High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.