Chaffey High
High Schools (Public)Grades 9–12Active
1245 North Euclid Avenue, Ontario, CA 91762-1997
(909) 988-5560
Overall Score (2024-25)
↑ 0.6 ptsvs 2023-2455
out of 100
AverageTop 44% statewideData completeness: 100%
Academic Achievement58
CA avg
Academic Growth77
CA avg
Equity47
CA avg
School Climate31
CA avg
College/Career Readiness47
CA avg
Score reflects percentile ranking among same-type schools. How is this calculated?
Test Scores (2024-25)
Percentage of students meeting or exceeding standards on CAASPP/CAST.
English Language Arts58.8%
CA avg 48.8%
Mathematics20.5%
CA avg 34.6%
Science / CAST (2024-25)21.9%
CA avg 32.7%
By Grade
| Grade | ELA % | Math % | Science % | Tested |
|---|---|---|---|---|
| 11 | 58.8% | 20.5% | — | 703 |
Enrollment & Demographics (2024-25)
3,127
Total Students
81.5%
Free/Reduced Lunch
17.1%
English Learners
Staff (2024-25)
23.4:1
Pupil-Teacher Ratio
Graduation Rates (2024-25)
↑ 1.1%87.4%
Graduation Rate
53.1%
Met UC/CSU Reqs
12.3%
Dropout Rate
Chronic Absenteeism (2024-25)
↑ 8.0%38.2%
Chronically Absent
3,277
Students Tracked
Historical Trends
Year-over-year performance data from official CDE records.
Composite Score
ELA Proficiency %
Math Proficiency %
Science / CAST %
Graduation Rate %
Chronic Absenteeism Rate %
Total Enrollment
Parent & Community Reviews
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Data sourced from the California Department of Education. CDS Code: 36676523632205. Academic Year: 2023-24 – 2024-25.