High SchoolsGrades 9-12

Chaffey High

Chaffey Joint Union High · San Bernardino County · 1245 North Euclid Avenue, Ontario, CA 91762-1997

(909) 988-5560 · www.cjuhsd.net

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5/10

#673

Rank 673 out of 1,227

Top 55%

English Language Arts6/10 · #569 · 54th percentile

Mathematics5/10 · #727 · 41st percentile

Science4/10 · #805 · 38th percentile

English Language Arts

Math Trend

Science Trend

School Overview

Chaffey High is one of the older, more storied campuses in the Inland Empire, situated in Ontario — a city that blends suburban neighborhoods with a strong working-class identity and easy freeway access to both LA and the desert. The school lands solidly in the middle of the pack statewide, with English scores edging slightly ahead of math and science, making it a reasonable fit for families who want a traditional high school experience with a range of extracurriculars and a tight-knit community feel. Families rooted in Ontario who value school pride and local tradition will likely feel at home here.

Student Demographics

685 students tested · 2024-25 school year

Ethnicity

Hispanic

624 (91%)

White

21 (3%)

African American

14 (2%)

Other

26 (4%)

Key Indicators

English Learners140 (20%)

Socioeconomically Disadvantaged628 (92%)

Students with Disabilities99 (14%)

Staff & Teachers(2024-25)

3,127

Enrollment

133.6

Teachers (FTE)

23.4:1

Student-Staff Ratio

Administrators (FTE)

31.4

Avg Class Size*(2023-24)

Graduation Rate

83.9%of students graduate within 4 years

Graduation Rate Trend

College Readiness

Advanced Placement (AP) and International Baccalaureate (IB) programs offer college-level coursework and are a key indicator of academic rigor.

AP Courses

offered

12.3%

AP Participation

of students

412

AP Enrollment

students

Source: Civil Rights Data Collection (CRDC) 2021-22

Athletics

Tigers · CIF Southern Section

varsity sports

10 boys

11 girls

BaseballBasketball (Boys)Basketball (Girls)Cross Country (Boys)Cross Country (Girls)Flag Football (Girls)Football (11 person)Golf (Boys)

Source: CIF Home Campus 2025-26

Community Enrichment Programs

This supplementary score measures the availability of enrichment programs — such as tutoring, music, dance, sports, and arts — within 3 miles of the school. Schools in communities with more diverse and accessible programs score higher.

Nearby Programs7/10 · #680 · 69th percentile

154 programs within 3 miles. Ranked among High Schools in California.

Nearby Libraries

No programs found

Similar Schools Near Chaffey High

Overall Score Percentile

<20

20+

40+

60+

80+

Explore by County & District

Chaffey High5/10

Ontario High6/10

Montclair High7/10

Alta Loma High8/10

	Chaffey High	Ontario High	Montclair High	Alta Loma High
District	Chaffey Joint Union High	Chaffey Joint Union High	Chaffey Joint Union High	Chaffey Joint Union High
City	Ontario	Ontario	Montclair	Alta Loma
Type	High School	High School	High School	High School
Grades	9-12	9-12	9-12	9-12
Overall	5/10	6/10	7/10	8/10
Ranking	673 \| 45%	563 \| 54%	403 \| 67%	327 \| 73%
English	569 \| 54%	468 \| 62%	305 \| 75%	239 \| 81%
Math	727 \| 41%	524 \| 57%	444 \| 64%	338 \| 73%
Science	805 \| 38%	911 \| 30%	604 \| 53%	528 \| 59%
Enrichment	680 \| 69%	1072 \| 52%	542 \| 76%	584 \| 74%
Grad Rate	83.9%	90.9%	87%	93.8%
AP Courses	14	12	12	11
AP Rate	12.3%	15.8%	16.7%	20.7%
Sports	24	17	24	24
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English Language Arts

Mathematics

Science

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