How does Chaffey High compare to other high schools in Ontario?

Chaffey High has a SchoolScope composite score of 50.9/100, placing it at the 51st percentile statewide. 17% of students exceed standard, with a total of 1,410 students tested across grades and subjects.

What percentage of students exceed standards at Chaffey High?

16.7% of students at Chaffey High exceed the state standard on CAASPP assessments, while 39.6% meet or exceed it. The gap between these two numbers reveals whether the school pushes students beyond basic proficiency.

What is the chronic absenteeism rate at Chaffey High?

38.2% of students at Chaffey High are chronically absent (missing 10% or more of school days). This metric reflects school culture and family engagement, and is weighted at 15% in our composite score.

Chaffey High

High School

Chaffey Joint Union High OntarioSan Bernardino County91762

Composite Score

out of 100

State Percentile

of high schools

State Rank

of 1,739 California high schools

School overview

Enrollment

3,223 students

Student-Teacher Ratio

24:1

Free/Reduced Lunch

81%

Teachers

135 full-time

College & career readiness

Graduation Rate

87.4%

AP Exam Prepared

49.6%

A-G Completion

53.1%

College-Going Rate

58.9%

Data source: California Department of Education — ACGR, CCI, CGR reports

Dashboard indicators

ELA Year-over-Year

Increased Significantly

+15.3 pts DFS change

Math Year-over-Year

Increased

+6.3 pts DFS change

EL Proficiency (ELPAC)

7.2%

English learners at Level 4 (Well Developed) · 528 tested

Data source: California School Dashboard 2025, ELPAC 2024

Student demographics

Hispanic89.3%

White3.5%

Asian1.6%

Black3.0%

Other2.6%

Performance breakdown

Performance breakdown for Chaffey High
Category	Percentage
Exceeded Standard	16.7%
Met Standard	22.9%
Below Standard	60.4%

What other rankings don't show you

Most rating sites report "40% proficient" for Chaffey High and stop there. Here's what that number hides:

16.7% of students exceeded standard while 22.9% merely met it. That exceeded rate is near the state average of 15.5%. That's 8.2 points below the Chaffey Joint Union High district average of 24.9%. Nearby schools (within ~3 miles) average 17.7% exceeded — about the same. The gap between "met" and "exceeded" is the difference between a school that clears the bar and one that raises it.

The graduation rate is 87.4%. 53.1% of students complete A-G requirements for UC/CSU eligibility — a strong college readiness signal. 58.9% of graduates go on to college within a year.

Chronic absenteeism is 38.2%, above the state average of 34.0%.

Why the exceeded vs. met split matters →