Diamond Bar High
21400 Pathfinder Rd., Diamond Bar, CA 91765 Map
Math (met standard)
68%
+36
state 32% · 2025-26
English (met standard)
78%
+21
state 57% · 2025-26
Science (met standard)
58%
+25
state 33% · 2025-26
Low income
23%
free or reduced-price lunch
Students
2,563
2024-25
Students per teacher
26.0
2024-25
Test score trends
Share of students who met or exceeded the state standard each year.
Latest results by grade
| Grade | Math | English | Science |
|---|---|---|---|
| Grade 11 | 68% state 32% · 2025-26 | 78% state 57% · 2025-26 | — |
| All grades | 68% state 32% · 2025-26 | 78% state 57% · 2025-26 | 58% state 33% · 2025-26 |
Results by year (all grades)
| School year | Math | English | Science |
|---|---|---|---|
| 2025-26 | 68% state 32% | 78% state 57% | 58% state 33% |
| 2024-25 | 68% state 31% | 76% state 57% | 54% state 28% |
| 2023-24 | 67% state 28% | 78% state 56% | 56% state 27% |
| 2022-23 | 68% state 27% | 79% state 55% | 54% state 27% |
| 2021-22 | 70% state 27% | 78% state 55% | 46% state 27% |
| 2020-21 | 77% state 34% | 79% state 59% | 53% state 32% |
| 2018-19 | 73% state 32% | 80% state 57% | 52% state 26% |
| 2017-18 | 69% state 31% | 74% state 56% | — |
| 2016-17 | 75% state 32% | 79% state 60% | — |
| 2015-16 | 70% state 32% | 69% state 59% | — |
| 2014-15 | 73% state 30% | 77% state 56% | — |
Graduation & college
4-year graduation rate
96%
state 88% · 2025-26
Graduates meeting UC/CSU (A–G)
71%
state 55% · 2025-26
College-going rate
93%
state 66% · 2022-23
Graduation rate: students who earned a regular diploma within four years. UC/CSU: share of graduates who completed the A–G courses required by the University of California and California State University. College-going: share of high school completers who enrolled in any college within 12 months.
Students
Race and ethnicity, 2024-25
- Asian 72%
- White 5%
- Hispanic 17%
- Black 1%
- Two or more 4%
- Other 0%
Year-by-year history is loaded from the NCES Common Core of Data (2017-18 onward).
Nearby schools
2025-26 results
Subject percentages show the share of students who met or exceeded the state standard.
| Pick to compare | |||||
|---|---|---|---|---|---|
|
Ron Hockwalt Academies (Continuation)
Grades 9–12
Alternative
· Walnut Valley Unified
|
2.0 mi |
0%
−27
vs state · 2022-23
|
27%
−29
vs state · 2022-23
|
28% | |
|
John A. Rowland High
Grades 9–12
· Rowland Unified
|
2.6 mi |
44%
+12
vs state
|
62%
+4
vs state
|
68% | |
|
Walnut High
Grades 9–12
· Walnut Valley Unified
|
2.8 mi |
62%
+30
vs state
|
80%
+23
vs state
|
24% | |
|
Nogales High
Grades 9–12
· Rowland Unified
|
3.4 mi |
15%
−17
vs state
|
54%
−3
vs state
|
83% | |
|
Santana High (Continuation)
Grades 9–12
Alternative
· Rowland Unified
|
4.0 mi |
2%
−29
vs state
|
15%
−43
vs state
|
91% | |
|
Rowland Virtual Learning Academy
Grades K–12
Alternative
· Rowland Unified
|
4.0 mi |
58%
|
25%
|
81% | |
|
Brea Olinda High
Grades 9–12
· Brea-Olinda Unified
|
4.1 mi |
49%
+17
vs state
|
68%
+11
vs state
|
42% | |
|
Brea Canyon High (Continuation)
Grades 9–12
Alternative
· Brea-Olinda Unified
|
4.2 mi |
5%
−25
vs state · 2024-25
|
5%
−52
vs state · 2024-25
|
44% | |
|
Diamond Ranch High
Grades 9–12
· Pomona Unified
|
4.4 mi |
31%
−1
vs state
|
68%
+11
vs state
|
79% | |
|
International Polytechnic High
Grades 9–12
Alternative
· Los Angeles County Office of Education
|
4.9 mi |
60%
+28
vs state
|
89%
+31
vs state
|
27% |
No schools match this filter.