Public schools in Ontario, OR
8 open public schools with an address in Ontario, operated by 3 education agencies. Compare size, staffing, grade spans, and school type, then confirm assignment with the district.
Public schools
8
NCES preliminary directory 2025–26
Reported students
2,668
7 schools reporting · NCES 2024–25
Median student–teacher ratio
16.1:1
Oregon median 17.1:1
Charter schools
2
0 virtual
An overview of Ontario public schools
The federal directory lists 8 public schools in Ontario, OR: 4 elementary, 1 middle, 1 high, 2 combined or other. The 7 schools that reported 2024–25 membership enrolled 2,668 students, an average of 381 per school. The largest campus is Ontario High School (709 students), and the largest elementary school is Alameda Intermediate School (355).
Ontario SD 8C operates the most schools here (6), plus 2 charter, service, or other agencies. City names come from school mailing addresses, which often differ from district or municipal boundaries.
Across schools that reported staffing, the median student–teacher ratio is 16.1:1, lower than the statewide school median of 17.1:1. A ratio counts classroom-teacher FTE against total enrollment, so specialized programs and part-time staffing can move it; ask schools for actual class sizes by grade.
School choice options include 2 charter schools. Application windows and lotteries usually open months before the school year.
Among 2 high and combined schools with 2021–22 civil-rights data, 0 reported students enrolled in AP courses and 1 of 2 reported computer-science classes. Confirm current course catalogs directly with each school.
About 87% of students in reporting schools were eligible for free or reduced-price meals in 2024–25. This describes the community served; it is not a quality signal, and community-eligibility schools can report differently.
School districts and agencies serving Ontario
Elementary schools in Ontario
4| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| Aiken Elementary School Ontario SD 8C | 02–03 | 333 | 15.9:1 | |
| Alameda Intermediate School Ontario SD 8C | 04–05 | 355 | 16.1:1 | |
| Annex Charter School Annex SD 29 · Charter | KG–08 | 131 | 16.4:1 | |
| May Roberts Primary School Ontario SD 8C | KG–01 | 302 | 14.4:1 |
Middle schools in Ontario
1| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| Ontario Middle School Ontario SD 8C | 06–08 | 471 | 15.2:1 |
High schools in Ontario
1| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| Ontario High School Ontario SD 8C | 09–12 | 709 | 17.8:1 |
Combined, early-childhood, and other schools in Ontario
2| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| EdFlexOregon Ontario SD 8C | KG–12 | — | — | |
| Four Rivers Community School Oregon Department of Education · Charter | KG–12 | 367 | 18.4:1 |
Student demographics
Race and ethnicity share of reported enrollment
- White29.2%
- Hispanic66.8%
- Black0.2%
- Asian0.1%
- American Indian / Alaska Native0.1%
- Native Hawaiian / Pacific Islander0%
- Multiracial3.5%
Enrollment-weighted across 7 Ontario schools with NCES CCD 2024–25 race/ethnicity counts (2,668 students). Privacy suppression can leave small gaps.
Questions about public schools in Ontario
How many public schools are in Ontario, OR?
The current NCES directory lists 8 open public schools with a location address in Ontario: 4 elementary, 1 middle, 1 high, 2 combined or other. Together they reported 2,668 students in 2024–25. The count includes charter, alternative, and special-purpose public schools; it excludes private schools.
Which school districts serve Ontario?
Schools with an address in Ontario belong to 3 education agencies, led by Ontario SD 8C (6 schools), Annex SD 29 (1 school), Oregon Department of Education (1 school). A mailing city is not an attendance boundary; confirm the district for a specific address.
What is the largest public high school in Ontario?
Ontario High School reported the largest high-school enrollment in Ontario, with 709 students in 2024–25 (grades 09–12). Size is a description of the campus, not a quality measure.
Are there charter schools in Ontario?
Yes. 2 of the 8 public schools in Ontario are identified as charter schools in the NCES directory, including Annex Charter School, Four Rivers Community School. Charter schools are public and tuition-free, but admission usually uses an application or lottery.
What is the typical student–teacher ratio in Ontario schools?
The median reported student–teacher ratio across Ontario public schools is 16.1:1, lower than the Oregon school median of 17.1:1. The ratio divides enrollment by classroom-teacher FTE; it is not an average class size.
Does living in Ontario guarantee a seat at a specific school?
No. Assignment depends on the district's attendance boundaries, programs, and enrollment rules, which can split a city or cross city lines. Use the district profile and its official boundary or school-locator tool to confirm the assigned school for an exact address.
Nearby Oregon cities
Sources: NCES Common Core of Data 2025–26 preliminary directory (schools, grades, addresses, charter status) and 2024–25 nonfiscal files (enrollment, teachers, race/ethnicity, meal eligibility); Civil Rights Data Collection 2021–22 (AP and computer science). Cities are grouped by school mailing address. Methodology · All Oregon cities