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San Dimas High

High School
Composite Score
out of 100
State Percentile
of high schools
State Rank
of California high schools

School overview

Enrollment
1,248 students
Student-Teacher Ratio
21:1
Free/Reduced Lunch
32%
Teachers
59 full-time

College & career readiness

Graduation Rate
97.5%
AP Exam Prepared
65.0%
A-G Completion
60.8%
College-Going Rate
86.4%

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

Dashboard indicators

ELA Year-over-Year
Declined
-5.1 pts DFS change
Math Year-over-Year
Increased
+3.8 pts DFS change
EL Proficiency (ELPAC)
20.0%
English learners at Level 4 (Well Developed) · 45 tested

Data source: California School Dashboard 2025, ELPAC 2024

Student demographics

Hispanic60.5%
White18.9%
Asian6.3%
Black3.0%
Other11.4%

Performance breakdown

Performance breakdown for San Dimas High
CategoryPercentage
Exceeded Standard30.4%
Met Standard30.9%
Below Standard38.7%

What other rankings don't show you

Most rating sites report "61% proficient" for San Dimas High and stop there. Here's what that number hides:

30.4% of students exceeded standard while 30.9% merely met it. That exceeded rate is 14.9 points above the state average of 15.5%. That's 7.2 points below the Bonita Unified district average of 37.6%. Compared to the 5 nearby schools within ~3 miles, this exceeded rate is 18.7 points higher (vs 11.7% average). 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 97.5% — above the state target. 60.8% of students complete A-G requirements for UC/CSU eligibility — a strong college readiness signal. 86.4% of graduates go on to college within a year.

Chronic absenteeism is 16.6%, better than the state average of 34.0%.

Why the exceeded vs. met split matters →

Key metrics

% Exceeded Standard
30.4%
Students scoring above proficient
% Met or Above
61.3%
Students meeting standard
Chronic Absenteeism
16.6%
Students missing 10%+ of days
Suspension Rate
2.2%
Students suspended at least once
Total Tested
565
Across all grades & subjects

ELA scores by grade

GradeTestedExceededMetNearly MetNot MetMet+Above
11th28437.0%39.1%14.1%9.9%76.1%

Math scores by grade

GradeTestedExceededMetNearly MetNot MetMet+Above
11th28123.8%22.8%26.0%27.4%46.6%
K-12 Feeder PathBoundary data

Feeder patterns derived from 2015-16 NCES attendance boundary data. Boundaries may have changed. Contact your school district for current information.

Data source: California Department of Education (2025 test year) · How we score