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Email BoardChaffey District Online High
1802 East 7th Street, Ontario, CA 91764-1210
Summary
Chaffey District Online High is a good school.
Reading and math results average to the 94th percentile among comparable California schools.
77.8% of students met California's reading standard, but it is trending down.
77.1% of students met California's math standard, which is strong statewide and is quickly trending up.
Proficiency stats
| Current Reading Proficiency | 77.8% |
| Current Math Proficiency | 77.1% |
| Reading State Rank | 162/1,596 (90th percentile) |
| Math State Rank | 23/1,596 (99th percentile) |
School information
| Student / Teacher Ratio | 19:1 |
| Student enrollment (2024–25) | 93 |
| Low-Income Students | 60 (64.5%) |
| English Learners | 2 (2.2%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | No |
| Magnet school | No |
Test score trends
Reading rose 19.5 points from last year and fell 9.7 points over the full period. Math rose 11.9 points from last year and rose 14.6 points over the full period.
•Math +14.6 percentage points (2024–2026)Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Only one group has a reportable reading result.
Distribution of Scores by Grade
77.8% of tested students meet the reading standard in the grade shown. Overall, the school’s reading results rank in the top 11% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 5.8-point reading income gap is narrower than the 14.7-point gap at a typical California 9–12 school.
No reported results for 2024.
•English Learners vs English Native
Results for both language groups are unavailable, so a current reading gap cannot be calculated.
No reported results for 2024.
Math Proficiency Scores
2026 state test results
Race and Ethnicity
Only one group has a reportable math result.
Distribution of Scores by Grade
77.2% of tested students meet the math standard in the grade shown. Overall, the school’s math results rank in the top 2% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
Results for both income groups are unavailable, so a current math gap cannot be calculated.
No reported results for 2024.
•English Learners vs English Native
Results for both language groups are unavailable, so a current math gap cannot be calculated.
No reported results for 2024.
How we compare income gaps
“Typical” means the median gap across 876 schools for reading and 882 for math. The comparison uses 2026 California 9–12 schools with at least 20 tested students in each income group and a reported low-income student population. Each school counts once. Its gap is non-low-income proficiency minus low-income proficiency, including negative gaps. California state test data
Understanding this school
How does Chaffey District Online High compare within the district?
Chaffey District Online High is No. 2 in reading and No. 1 in math proficiency among the 10 9–12 schools in Chaffey Joint Union High with 2026 results.
Explore the district’s schoolsHow does Chaffey District Online High rank in California?
Chaffey District Online High ranks No. 162 of 1,596 in reading and No. 23 of 1,596 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How do low-income students at Chaffey District Online High compare within the district?
Low-income students here rank No. 2 in reading and No. 1 in math among 10 9–12 district schools with reportable 2026 results for this group. 76.0% meet the reading standard and 80.0% meet the math standard.
See results by student groupHow does Chaffey District Online High compare with other schools in Ontario?
Chaffey District Online High is No. 1 in both reading and math proficiency among the 5 9–12 schools in Ontario with 2026 results.
Explore schools in OntarioHow does Chaffey District Online High compare with other schools in San Bernardino County?
Chaffey District Online High is No. 4 in reading and No. 1 in math proficiency among the 56 9–12 schools in San Bernardino County with 2026 results.
Explore schools in San Bernardino CountyWhich schools should I compare?
Schools serving 9–12 in the same district.
| School | Math | Reading |
|---|---|---|
| Chaffey District Online HighThis school | 77.1% | 77.8% |
| Chaffey High | 22.1% | 53.2% |
| Colony High | 24.8% | 55.6% |
