Chaffey High
🇺🇸 Official data · 2025Ontario, California 91762 · Chaffey Joint Union High
#992 of 1,343 high schools in California
#14415 of 16,910 nationally
About Chaffey High
Chaffey High is a public high located in Ontario, in the Chaffey Joint Union High school district of California, United States. It caters for Grades 9–12. In 2025 it enrolled 3,127 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 24.8 out of 100, placing it in the lower 50% of high schools in United States and 992nd of 1,343 ranked high schools in California. Its strongest component is reading proficiency (44th percentile), and its weakest is students per teacher (7th percentile).
Other published figures: enrollment 3,127.
There are 34 schools in Ontario; Chaffey High ranks 23rd of 34 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)20%
- Reading proficiency (30%)51%
- Community advantage (fewer free/reduced-price lunch) (25%)81.5%
- Students per teacher (15%)23.5
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Chaffey High by the official sources.
- Enrollment
- 3,127
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 81.5%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 23.5
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 51%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 20%
- Share of tested students proficient or above (all students, all grades).
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Schools near Chaffey High
Closest schools by straight-line distance, with their Success Index (US).
Vina Danks Middle
Ontario · Public middle · Grades 7–8
544 students · 407 m away
Edison Elementary
Ontario · Public elementary · Grades K–8
736 students · 904 m away
Hawthorne Elementary
Ontario · Public elementary · Grades K–6
549 students · 918 m away
Central Language Academy
Ontario · Public elementary · Grades K–8
736 students · 1.1 km away
Berlyn Elementary
Ontario · Public elementary · Grades K–6
639 students · 1.4 km away
Citrus Elementary
Upland · Public elementary · Grades K–6
494 students · 1.5 km away
Lincoln Elementary
Ontario · Public elementary · Grades K–6
530 students · 2.0 km away
Elderberry Elementary
Ontario · Public elementary · Grades K–6
544 students · 2.0 km away
Upland Elementary
Upland · Public elementary · Grades K–6
404 students · 2.5 km away
El Camino Elementary
Ontario · Public elementary · Grades K–6
476 students · 2.5 km away
Similar schools
Public high schools in California with a comparable Enrollment.
Chaparral High
Temecula · Public high · Grades 9–12
3,136 students
Clovis East High
Clovis · Public high · Grades 9–12
3,113 students
Santa Maria High
Santa Maria · Public high · Grades 9–12
3,143 students
James Logan High
Union City · Public high · Grades 9–12
3,096 students
Fountain Valley High
Fountain Valley · Public high · Grades 9–12
3,171 students
Pioneer Valley High
Santa Maria · Public high · Grades 9–12
3,080 students
Frequently asked questions
Is Chaffey High a good school?
Chaffey High has a Success Index (US) of 24.8 out of 100 (Lower 50% of high schools in United States) and ranks #992 of 1,343 in California. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Chaffey High rank in California?
Chaffey High ranks #992 of 1,343 high schools in California and #14415 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Chaffey High?
Chaffey High had 3,127 students in 2025.
Is Chaffey High a elementary school or a high school?
Chaffey High is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Chaffey High?
There are 10 schools within 15 km of Chaffey High; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.