Total enrollment
23,067
-1,375 (-6%) vs SY 2020-21
30 schools in Rialto Unified
California · 23,067 students · 3 cities
Rialto Unified's public schools, 30 in all, serve about 23,067 K-12 students inside California, an average of 769 per school.
4-year change in Rialto Unified
SY 2020-21 vs SY 2024-25School count
29
0 (0%) vs SY 2020-21
Source: NCES Common Core of Data, enrollment-weighted demographic averages
How Rialto Unified ranks
Among districts| Measure | This district | In California | In the US |
|---|---|---|---|
| State test proficiency ranked highest first | 34.0% | #340 of 534 | N/A |
| Enrollment ranked largest first | 23,067 | #41 of 587 | #324 of 9,234 |
| Number of schools ranked most first | 29 | #53 of 587 | N/A |
| Students per teacher ranked fewest first | 23.2:1 | #489 of 587 | #8,879 of 9,044 |
| Free or reduced-price lunch share ranked highest first | 83.7% | #106 of 587 | #1,017 of 8,164 |
| Diversity index ranked most diverse first | 23.7% | #451 of 530 | #5,352 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 Rialto Unified
State test results across the district's 27 scored schools run from Samuel W. Simpson Elementary at 56.3% proficient to Warren F. Frisbie Middle at 18.9%, a gap of 37.4 points. That is the 153rd widest gap among 458 California districts with four or more scored schools.
Since 2017-18, the 29 district schools that reported both years went from 25,454 to 23,067 students (down 9%) and from 1,035 to 996 full-time teachers (down 4%), 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 Rialto Unified
As a compact district in California, Rialto Unified serves 23,067 students across 30 schools.
For a sense of the school types, Rialto Unified covers 20 elementary, 5 middle, and 5 high schools.
Per-school enrollment averages around 769 in this district, meaningfully above the California typical of 578.
Trend over the past 4 years. Across the same 4-year window, public-school enrollment shrank 6%: 24,442 students in SY 2020-21 versus 23,067 in SY 2024-25.
On allk12, the community for Rialto Unified discusses comparison threads between local schools and program reviews. Posts come from current and former families, staff, and alumni.