Grade Trends

Chaffey Joint Union High School District

10 public schools · Ontario, CA

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

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Alta Loma High
Grades 9–12 · Chaffey Joint Union High
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%
Chaffey District Online High
Grades 9–12 Alternative · Chaffey Joint Union High
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%
Chaffey High
Grades 9–12 · Chaffey Joint Union High
22%
−10 vs state
53%
−4 vs state
32%
−4 vs state
7% Average of math, English and science: 29% in 2022-23 → 36% in 2025-26 81% 3,127 Hispanic 89%
Colony High
Grades 9–12 · Chaffey Joint Union High
25%
−7 vs state
56%
−2 vs state
29%
−7 vs state
Average of math, English and science: 37% in 2022-23 → 36% in 2025-26 70% 2,109 Hispanic 66%
Etiwanda High
Grades 9–12 · Chaffey Joint Union High
47%
+15 vs state
76%
+19 vs state
54%
+18 vs state
7% Average of math, English and science: 52% in 2022-23 → 59% in 2025-26 54% 3,446 Hispanic 52%
Los Osos High
Grades 9–12 · Chaffey Joint Union High
59%
+27 vs state
83%
+26 vs state
51%
+15 vs state
6% Average of math, English and science: 58% in 2022-23 → 64% in 2025-26 44% 2,759 Hispanic 41%
Montclair High
Grades 9–12 · Chaffey Joint Union High
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
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%
Rancho Cucamonga High
Grades 9–12 · Chaffey Joint Union High
46%
+14 vs state
70%
+12 vs state
47%
+12 vs state
3% Average of math, English and science: 51% in 2022-23 → 54% in 2025-26 57% 3,221 Hispanic 43%
Valley View High (Continuation)
Grades 9–12 Alternative · Chaffey Joint Union High
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%

Overall change: average of the three subjects, latest year vs. 3 years earlier (↑4% means the average rate went up 4 points, e.g. 82% → 86%; — means within ±2%). Low income = eligible for free or reduced-price lunch.