Public schools in Ontario, CA
40 open public schools with an address in Ontario, operated by 6 education agencies. Compare size, staffing, grade spans, and school type, then confirm assignment with the district.
Public schools
40
NCES preliminary directory 2025–26
Reported students
25,478
39 schools reporting · NCES 2024–25
Median student–teacher ratio
21.9:1
California median 21.6:1
Charter schools
0
4 magnet · 0 virtual
An overview of Ontario public schools
The federal directory lists 40 public schools in Ontario, CA: 26 elementary, 7 middle, 7 high. The 39 schools that reported 2024–25 membership enrolled 25,478 students, an average of 653 per school. The largest campus is Chaffey High (3,127 students), and the largest elementary school is Park View Elementary (844).
Ontario-Montclair operates the most schools here (24), and 5 regular districts have at least one Ontario campus, plus 1 charter, service, or other agency. 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 21.9:1, similar to the statewide school median of 21.6:1. 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 4 magnet schools. Application windows and lotteries usually open months before the school year.
Among 6 high and combined schools with 2021–22 civil-rights data, 3 reported students enrolled in AP courses and 1 of 6 reported computer-science classes. Confirm current course catalogs directly with each school.
About 80% 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
Ontario-Montclair
Public school district
24 schools in Ontario · 34 total
Chaffey Joint Union High
Public school district
6 schools in Ontario · 11 total
Mountain View Elementary
Public school district
5 schools in Ontario
Chino Valley Unified
Public school district
3 schools in Ontario · 35 total
Baldy View ROP
Specialized public school district
1 school in Ontario
Cucamonga Elementary
Public school district
1 school in Ontario · 4 total
Elementary schools in Ontario
26| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| Arroyo Elementary Ontario-Montclair | KG–08 | 493 | 21.2:1 | |
| Berlyn Elementary Ontario-Montclair | KG–06 | 639 | 22.8:1 | |
| Bon View Elementary Ontario-Montclair | KG–06 | 598 | 23.9:1 | |
| Central Language Academy Ontario-Montclair · Magnet | KG–08 | 736 | 25.1:1 | |
| Corona Elementary Ontario-Montclair | KG–06 | 414 | 22.9:1 | |
| Creek View Elementary Mountain View Elementary | KG–06 | 566 | 23:1 | |
| Del Norte Elementary Ontario-Montclair | KG–06 | 428 | 21.4:1 | |
| Edison Elementary Ontario-Montclair · Magnet | KG–08 | 736 | 25.9:1 | |
| El Camino Elementary Ontario-Montclair | KG–06 | 476 | 18.3:1 | |
| Elderberry Elementary Ontario-Montclair | KG–06 | 544 | 22.5:1 | |
| Euclid Language Academy Ontario-Montclair | KG–08 | 572 | 21.1:1 | |
| Hawthorne Elementary Ontario-Montclair | KG–06 | 549 | 24.8:1 | |
| Levi H. Dickey Elementary Chino Valley Unified | KG–06 | 413 | 25.6:1 | |
| Liberty Elementary Chino Valley Unified | KG–06 | 578 | 23.8:1 | |
| Lincoln Elementary Ontario-Montclair | KG–06 | 530 | 18.5:1 | |
| Mariposa Elementary Ontario-Montclair | KG–06 | 537 | 21.5:1 | |
| Mission Elementary Ontario-Montclair | KG–06 | 571 | 23.8:1 | |
| Mountain View Elementary Mountain View Elementary | KG–06 | 564 | 23:1 | |
| Online Academy Ontario-Montclair · Alternative School | KG–08 | 125 | 16.7:1 | |
| Ontario Center Cucamonga Elementary | KG–05 | 585 | 19.9:1 | |
| Park View Elementary Mountain View Elementary | KG–06 | 844 | 24.3:1 | |
| Ranch View Elementary Mountain View Elementary | KG–06 | 738 | 22:1 | |
| Richard Haynes Elementary Ontario-Montclair | KG–06 | 641 | 23.7:1 | |
| Sultana Elementary Ontario-Montclair | KG–06 | 589 | 19.9:1 | |
| Vineyard Elementary Ontario-Montclair · Magnet | KG–08 | 562 | 25.4:1 | |
| Vista Grande Elementary Ontario-Montclair | KG–06 | 358 | 23.9:1 |
Middle schools in Ontario
7| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| De Anza Middle Ontario-Montclair | 07–08 | 510 | 15.9:1 | |
| Grace Yokley Junior High Mountain View Elementary | 07–08 | 606 | 21.2:1 | |
| Oaks Middle Ontario-Montclair | 07–08 | 668 | 21.5:1 | |
| Ray Wiltsey Middle Ontario-Montclair | 06–08 | 727 | 17.5:1 | |
| Student Outreach & Academic Renaissance Academy Ontario-Montclair · Alternative School | 04–08 | — | — | |
| Vina Danks Middle Ontario-Montclair · Magnet | 07–08 | 544 | 16.3:1 | |
| Woodcrest Junior High Chino Valley Unified | 07–08 | 324 | 17.5:1 |
High schools in Ontario
7| School | Grades | Students | Ratio | Compare |
|---|---|---|---|---|
| Baldy View ROP Baldy View ROP · Career and Technical School | 09–12 | 0 | — | |
| Chaffey Community Day Chaffey Joint Union High · Alternative School | 09–12 | 20 | 9.1:1 | |
| Chaffey District Online High Chaffey Joint Union High · Alternative School | 09–12 | 93 | 18.3:1 | |
| Chaffey High Chaffey Joint Union High | 09–12 | 3,127 | 23.4:1 | |
| Colony High Chaffey Joint Union High | 09–12 | 2,109 | 25.9:1 | |
| Ontario High Chaffey Joint Union High | 09–12 | 1,994 | 21.8:1 | |
| Valley View High (Continuation) Chaffey Joint Union High · Alternative School | 09–12 | 370 | 14.8:1 |
Student demographics
Race and ethnicity share of reported enrollment
- White4.9%
- Hispanic81%
- Black5.4%
- Asian6.1%
- American Indian / Alaska Native0.6%
- Native Hawaiian / Pacific Islander0.4%
- Multiracial1.6%
Enrollment-weighted across 38 Ontario schools with NCES CCD 2024–25 race/ethnicity counts (25,478 students). Privacy suppression can leave small gaps.
Questions about public schools in Ontario
How many public schools are in Ontario, CA?
The current NCES directory lists 40 open public schools with a location address in Ontario: 26 elementary, 7 middle, 7 high. Together they reported 25,478 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 6 education agencies, led by Ontario-Montclair (24 schools), Chaffey Joint Union High (6 schools), Mountain View Elementary (5 schools). A mailing city is not an attendance boundary; confirm the district for a specific address.
What is the largest public high school in Ontario?
Chaffey High reported the largest high-school enrollment in Ontario, with 3,127 students in 2024–25 (grades 09–12). Size is a description of the campus, not a quality measure.
Are there charter schools in Ontario?
No school with an address in Ontario is identified as a charter school in the current NCES directory. Families may still have charter or virtual options elsewhere in California.
What is the typical student–teacher ratio in Ontario schools?
The median reported student–teacher ratio across Ontario public schools is 21.9:1, similar to the California school median of 21.6:1. 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 California 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 California cities