List your school
Public SchoolHigh

Ontario High School

1115 W Idaho Ave, Ontario, OR 97914

BSchola Grade
Directions CallWebsite
Grades
9–12
High
Students
709
Enrolled 2024–25
Students per teacher
17.8 : 1
Full-time teachers
District
Ontario SD 8C
Malheur County

Schola Grade B · Above average

Letter grade (A–F) · compared with 198 Oregon high schools · How we grade
Test scores37% proficient in math & reading
63rdpercentile
Equity37% of low-income students proficient
63rdpercentile
Attendance36% chronically absent
84thpercentile
Graduation rate87% graduate in 4 years
51stpercentile
College readinessAt least 0% take AP, IB or dual-enrollment courses
9thpercentile
Class size17.8 students per teacher
57thpercentile

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 Ontario High School

Ontario High School is a public high school in Ontario, Oregon, serving grades 9–12. It is part of Ontario SD 8C. The school is located in a town in Malheur County.

In the 2024–25 school year, 709 students were enrolled, with about 17.8 students for every full-time teacher. That ratio is close to the typical Oregon high school (17.4 students per teacher). Its Schola Grade is B (above average), compared with 198 Oregon high schools.

Grades & enrollment

Students per grade, 2024–25Grades 9–12

Location & nearby schools

1115 W Idaho Ave
Ontario, OR 97914
Open in Google Maps

School details

Type
Public School · What this means
Level
High
Grades offered
9–12
Enrollment (2024–25)
709 students
Students per teacher
17.8 to 1
Charter school
No
Magnet school
No
Virtual learning
Offers virtual courses
Locale
Town — Distant
School district
Ontario SD 8C
County
Malheur County
NCES school ID
410927000746

Schools near Ontario High School

All 8 schools in Ontario →

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.