# Chaffey Joint Union High

Chaffey Joint Union High is a high district in San Bernardino County, California. Reading proficiency is 68.0%, +0.6 points from 2023 to 2025. Math proficiency is 34.4%, +0.1 points from 2023 to 2025.

## Key Stats

| Metric | Value |
| --- | --- |
| Canonical URL | https://caschooltrends.com/districts/chaffey-joint-union-high |
| County | San Bernardino |
| District type | High |
| Schools | 10 |
| Students | 22,040 |
| Student / teacher ratio | 24:1 |
| Average spending per student | $18,894 |
| Low-Income Students | 15,246 (68.9%) |
| English Learners | 1,777 (8.0%) |

## Reading Proficiency History

| Year | Proficient % | Tested Students |
| --- | --- | --- |
| 2023 | 67.5% | 5,471 |
| 2024 | 67.0% | 4,936 |
| 2025 | 68.0% | 5,262 |

## Math Proficiency History

| Year | Proficient % | Tested Students |
| --- | --- | --- |
| 2023 | 34.3% | 5,416 |
| 2024 | 31.7% | 4,931 |
| 2025 | 34.4% | 5,253 |

## Reading Performance by Income Group

| Year | Low-Income | Non-Low-Income |
| --- | --- | --- |
| 2023 | 62.6% | 77.1% |
| 2024 | 61.8% | 77.9% |
| 2025 | 63.9% | 78.2% |

## Math Performance by Income Group

| Year | Low-Income | Non-Low-Income |
| --- | --- | --- |
| 2023 | 28.3% | 46.3% |
| 2024 | 25.5% | 44.5% |
| 2025 | 28.9% | 48.0% |

## Reading Performance by English Learner Status

| Year | English Learners | English Native |
| --- | --- | --- |
| 2023 | 11.1% | 71.8% |
| 2024 | 7.6% | 69.6% |
| 2025 | 16.9% | 70.6% |

## Math Performance by English Learner Status

| Year | English Learners | English Native |
| --- | --- | --- |
| 2023 | 6.7% | 37.3% |
| 2024 | 5.5% | 32.9% |
| 2025 | 9.6% | 35.5% |

## Board Members

| Name | Role | Email | First Year | Term Expires |
| --- | --- | --- | --- | --- |
| Cary W. Willborn | President (Trustee Area 5) | cary.willborn@cjuhsd.net | N/A | N/A |
| English | Board Member | N/A | 2022 | 2026 |

## Schools

| Rank | School | City | Reading | Math | Combined | Reading 2-Year | Math 2-Year |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | Los Osos High | Rancho Cucamonga | 79.0% | 50.9% | 65.0% | +0.2 | -0.5 |
| 2 | Etiwanda High | Etiwanda | 81.0% | 46.2% | 63.6% | +8.0 | +3.0 |
| 3 | Chaffey District Online High | Ontario | 58.3% | 65.2% | 61.8% | -23.5 | +65.2 |
| 4 | Rancho Cucamonga High | Rancho Cucamonga | 74.7% | 43.2% | 59.0% | -1.9 | +1.5 |
| 5 | Alta Loma High | Alta Loma | 72.0% | 33.3% | 52.6% | -5.9 | -8.4 |
| 6 | Montclair High | Montclair | 69.4% | 29.9% | 49.7% | +3.0 | -1.1 |
| 7 | Ontario High | Ontario | 62.5% | 29.6% | 46.0% | +2.1 | +8.8 |
| 8 | Chaffey High | Ontario | 58.8% | 20.5% | 39.6% | +8.6 | +2.0 |
| 9 | Colony High | Ontario | 53.7% | 20.9% | 37.3% | -11.8 | -4.2 |
| 10 | Valley View High (Continuation) | Ontario | 11.1% | 3.4% | 7.2% | +5.0 | +3.4 |