Grade Trends

Chaffey High

Grades 9–12 Public District: Chaffey Joint Union High

1245 North Euclid Ave., Ontario, CA 91762 Map

Math (met standard)
22%
−10 state 32% · 2025-26
English (met standard)
53%
−4 state 57% · 2025-26
Science (met standard)
32%
−4 state 36% · 2025-26
Low income
81%
free or reduced-price lunch
Students
3,127
2024-25
Students per teacher
23.4
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 22% state 32% · 2025-26 53% state 57% · 2025-26 —
All grades 22% state 32% · 2025-26 53% state 57% · 2025-26 32% state 36% · 2025-26
Results by year (all grades)
School year Math English Science
2025-26 22% state 32% 53% state 57% 32% state 36%
2024-25 21% state 31% 59% state 57% 22% state 28%
2023-24 19% state 28% 55% state 56% 20% state 27%
2022-23 19% state 27% 50% state 55% 17% state 27%
2021-22 15% state 27% 55% state 55% 17% state 27%
2020-21 32% state 34% 60% state 59% 20% state 28%
2018-19 20% state 32% 51% state 57% 12% state 26%
2017-18 19% state 31% 56% state 56% —
2016-17 19% state 32% 58% state 60% —
2015-16 27% state 32% 64% state 59% —
2014-15 24% state 30% 60% state 56% —

Graduation & college

4-year graduation rate
91%
state 88% · 2025-26
Graduates meeting UC/CSU (A–G)
58%
state 55% · 2025-26
College-going rate
59%
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

Year-by-year history is loaded from the NCES Common Core of Data (2017-18 onward).

Nearby schools

Subject percentages show the share of students who met or exceeded the state standard.

Pick to compare
Scholarship Prep - San Bernardino County
Grades K–12 Charter · San Bernardino County Office of Education
0.6 mi
18%
−23 vs state
34%
−14 vs state
7%
−29 vs state
Not enough years of data — —
Upland High
Grades 9–12 · Upland Unified
1.7 mi
40%
+8 vs state
65%
+8 vs state
45%
+7 vs state
9% Average of math, English and science: 41% in 2022-23 → 50% in 2025-26 70% 2,797 Hispanic 65%
Hillside High
Grades 10–12 Alternative · Upland Unified
1.9 mi
2%
−30 vs state
11%
−46 vs state
4%
−34 vs state
Average of math, English and science: 6% in 2022-23 → 6% in 2025-26 91% 119 Hispanic 75%
Valley View High (Continuation)
Grades 9–12 Alternative · Chaffey Joint Union High
2.2 mi
9%
−23 vs state
10%
−48 vs state
7%
−29 vs state
6% Average of math, English and science: 3% in 2022-23 → 9% in 2025-26 85% 370 Hispanic 78%
Chaffey District Online High
Grades 9–12 Alternative · Chaffey Joint Union High
2.3 mi
77%
+45 vs state
78%
+20 vs state
67%
+30 vs state
4% Average of math, English and science: 82% in 2022-23 → 78% in 2025-26 62% 93 Hispanic 59%
Montclair High
Grades 9–12 · Chaffey Joint Union High
2.8 mi
25%
−7 vs state
65%
+7 vs state
34%
−2 vs state
Average of math, English and science: 41% in 2022-23 → 41% in 2025-26 83% 2,515 Hispanic 88%
Ontario High
Grades 9–12 · Chaffey Joint Union High
2.9 mi
29%
−3 vs state
54%
−3 vs state
29%
−6 vs state
4% Average of math, English and science: 33% in 2022-23 → 37% in 2025-26 87% 1,994 Hispanic 89%
Inland Empire Springs Charter
Grades K–12 Charter · Inland Empire Springs Charter District
3.4 mi
38%
−2 vs state
54%
+6 vs state
31%
−4 vs state
Not enough years of data 61% 323 Hispanic 57%
San Antonio High (Continuation)
Grades 10–12 Alternative · Claremont Unified
3.6 mi
5%
−27 vs state
19%
−38 vs state
15%
−23 vs state
Average of math, English and science: 11% in 2022-23 → 13% in 2025-26 57% 69 Hispanic 67%
Alta Loma High
Grades 9–12 · Chaffey Joint Union High
3.8 mi
39%
+7 vs state
68%
+11 vs state
34%
−2 vs state
Average of math, English and science: 48% in 2022-23 → 47% in 2025-26 60% 2,386 Hispanic 60%