Top Rankings
Ontario-Montclair School District ranks among the top 20% of public school district in California for:
Category
Attribute
Community Size
Largest student body (number of students) (Top 1%)
For the 2026 school year, there are 33 public schools serving 17,640 students in Ontario-Montclair School District. This district's average testing ranking is 5/10, which is in the bottom 50% of public schools in California.
Public Schools in Ontario-Montclair School District have an average math proficiency score of 30% (versus the California public school average of 34%), and reading proficiency score of 40% (versus the 47% statewide average).
Minority enrollment is 97% of the student body (majority Hispanic), which is more than the California public school average of 80% (majority Hispanic).
Overview
This School District
This State (CA)
# Schools
34 Schools
10,347 Schools
# Students
17,640 Students
5,790,405 Students
# Teachers
826 Teachers
267,593 Teachers
Student-Teacher Ratio
21:1
21:1
Student By Grade
District Rank
Ontario-Montclair School District, which is ranked #963 of all 1,904 school districts in California (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
Overall District Rank
#934 out of 1932 school districts
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
30%
34%
Reading/Language Arts Test Scores (% Proficient)
40%
47%
Science Test Scores (% Proficient)
20%
29%