Total enrollment
17,640
-1,594 (-8%) vs SY 2020-21
34 schools in Ontario-Montclair
California · 17,640 students · 2 cities
Ontario-Montclair reports 34 public K-12 schools and approximately 17,640 students enrolled, per NCES, an average school size of 519.
4-year change in Ontario-Montclair
SY 2020-21 vs SY 2024-25School count
33
+1 (+3%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages
How Ontario-Montclair ranks
Among districts| Measure | This district | In California | In the US |
|---|---|---|---|
| State test proficiency ranked highest first | 38.3% | #283 of 534 | N/A |
| Enrollment ranked largest first | 17,640 | #69 of 587 | #462 of 9,234 |
| Number of schools ranked most first | 33 | #40 of 587 | N/A |
| Students per teacher ranked fewest first | 21.4:1 | #270 of 587 | #8,610 of 9,044 |
| Free or reduced-price lunch share ranked highest first | 86.8% | #79 of 587 | #870 of 8,164 |
| Diversity index ranked most diverse first | 21.9% | #461 of 530 | #5,516 of 6,853 |
Districts need at least 2 schools and 500 students to be ranked. Test proficiency is ranked within the state only, since each state gives a different test. Each rank links to the full list.
Inside Ontario-Montclair
State test results across the district's 32 scored schools run from Edison Elementary at 68.7% proficient to Vina Danks Middle at 26.0%, a gap of 42.7 points. That is the 111th widest gap among 458 California districts with four or more scored schools.
Since 2017-18, the 32 district schools that reported both years went from 21,043 to 17,515 students (down 17%) and from 902 to 818 full-time teachers (down 9%), as of 2024-25.
Proficient is the average share of students meeting the state standard across each school's state tests in 2023-24 and 2024-25; schools with fewer than 100 students and schools serving specialized populations are left out. Staffing figures come from the NCES Common Core of Data and count only schools that reported students and teachers in both years.
About Ontario-Montclair
As a sparse district in California, Ontario-Montclair enrolls 17,640 students across 34 schools.
For a sense of the school types, Ontario-Montclair is made up of 28 elementary and 6 middle.
Per-school enrollment averages around 519 in this district, lower than the California typical of 578.
Trend over the past 4 years. Across the same 4-year window, public-school enrollment fell 8%: 19,234 students in SY 2020-21 versus 17,640 in SY 2024-25. Ontario-Montclair now counts 33 public schools, up from 32 in SY 2020-21.
In the discussion threads here, the community for Ontario-Montclair discusses enrollment trends, district policy changes, and bus-route updates. Posts come from current and former families, staff, and alumni.