Public schools in Ontario, CA

Ontario has 38 public schools with a 2024-25 address in the city: 6 high, 6 middle, 26 elementary, enrolling 25,478 students. They are run by 5 districts and agencies; Ontario-Montclair School District runs 23 of them.

The 5 districts and agencies that run Ontario's public schools

Each district decides who can enroll where; its page holds its schools, spending and teachers.

DistrictSchools in OntarioDistrict students, fall 2022Spending per student, FY23
Ontario-Montclair School District2318,471$21,832
Chaffey Joint Union High School District623,145$16,706
Mountain View Elementary53,035$13,605
Chino Valley Unified325,645$14,518
Cucamonga School District12,299$20,970

Source: NCES Common Core of Data 2024-25: school location city and operating agency; NCES F-33 fiscal year 2022-23: district fall membership and current spending per student. Schools on a city's edge can serve students from outside it.

6 high schools in Ontario, 7,713 students

Source: NCES Common Core of Data 2024-25 (membership, staff, lunch); level from the directory. All free (CEP): every student eats free under the Community Eligibility Provision, so the school reports no free-lunch count.

6 middle schools in Ontario, 3,379 students

Source: NCES Common Core of Data 2024-25 (membership, staff, lunch); level from the directory. All free (CEP): every student eats free under the Community Eligibility Provision, so the school reports no free-lunch count.

26 elementary schools in Ontario, 14,386 students

The other 16 elementary schools

Source: NCES Common Core of Data 2024-25 (membership, staff, lunch); level from the directory. All free (CEP): every student eats free under the Community Eligibility Provision, so the school reports no free-lunch count.

How Ontario's public schools compare with California's

The median Ontario school has 21.9 students per full-time teacher, about the same as the California median of 21.6. Its median school enrolls 565 students (state 471).

Ontario against California, schools open in 2024-25 with students
OntarioCalifornia
Median students per teacher21.921.6
Median school size (students)565471
Schools with a schoolwide Title I program (2021-22)not reportednot reported
Schools where every student eats free (CEP)100%74%
Charter schools0%13%

Source: NCES Common Core of Data 2024-25 (membership, staff, lunch program, charter status; the 38 Ontario schools and the 9,918 California schools open that year with students); Title I status CCD 2021-22. Students per teacher counts 2024-25 teachers and ratios from 3 to 99.

What to look at next in Ontario

  1. Ontario-Montclair School DistrictRuns 23 of Ontario's 38 public schools and spent $21,832 per student in fiscal year 2022-23.$21,832
  2. Chaffey High, the largest high school in Ontario3,127 students in 2024-25, 23.4 per teacher.3,127
  3. Compare Ontario-Montclair School District with Chaffey Joint Union High School DistrictOntario's two largest operators side by side: enrollment, spending and schools.
  4. The largest public schools in CaliforniaCalifornia's 50 largest schools open in 2024-25, by enrollment.
  5. Find the school district for an Ontario addressA home's district, not its city, decides which public schools it can enroll in.

Source: NCES Common Core of Data 2024-25 (schools and their operating agencies); NCES F-33 finance survey, fiscal year 2022-23 (spending per student).

Choosing among them: how to choose a school district with the federal data, and what a Title I school is.

Other cities in California

  1. Los Angeles564 schools
  2. San Diego283 schools
  3. San Jose232 schools
  4. Sacramento197 schools
  5. Fresno179 schools
  6. Bakersfield146 schools
  7. San Francisco123 schools
  8. Stockton122 schools

Questions about schools in Ontario

  1. How many public schools are in Ontario, CA?
    38 public schools with an address in Ontario were open in 2024-25: 6 high, 6 middle, 26 elementary, enrolling 25,478 students.
  2. What is the largest high school in Ontario?
    Chaffey High, with 3,127 students in 2024-25 (Chaffey Joint Union High School District).
  3. Which districts run Ontario's schools?
    Ontario-Montclair School District (23 schools), Chaffey Joint Union High School District (6 schools), Mountain View Elementary (5 schools), Chino Valley Unified (3 schools), and 1 more. A school's district, not its city, decides who can enroll.

These figures are for information and are not a substitute for the district's enrollment office, which confirms the school a home is assigned to.

Sources

Source: NCES Common Core of Data School directory, membership, staff and lunch files · 2024-25

Source: NCES Common Core of Data Public school search (the official record of each school) · 2024-25