# Los Osos High

Los Osos High is a high school in Rancho Cucamonga, California. Reading proficiency is 79.0%, +0.2 points from 2023 to 2025. Math proficiency is 50.9%, -0.5 points from 2023 to 2025.

## Key Stats

| Metric | Value |
| --- | --- |
| Canonical URL | https://caschooltrends.com/schools/los-osos-high-rancho-cucamonga |
| District | Chaffey Joint Union High |
| Address | 6001 Milliken Avenue, Rancho Cucamonga, CA, 91737-7709 |
| Grade span | 9-12 |
| Charter status | Non-charter |
| Enrollment | N/A |
| Student / teacher ratio | 26:1 |
| Per-student spending | $18,894 |
| Low-Income Students | 1,221 (44.3%) |
| English Learners | 84 (3.0%) |

## Reading Proficiency History

| Year | Proficient % | Tested Students |
| --- | --- | --- |
| 2023 | 78.8% | 693 |
| 2024 | 81.8% | 653 |
| 2025 | 79.0% | 624 |

## Math Proficiency History

| Year | Proficient % | Tested Students |
| --- | --- | --- |
| 2023 | 51.4% | 679 |
| 2024 | 48.6% | 648 |
| 2025 | 50.9% | 621 |

## Reading Performance by Income Group

| Year | Low-Income | Non-Low-Income |
| --- | --- | --- |
| 2023 | 70.6% | 83.4% |
| 2024 | 77.6% | 84.2% |
| 2025 | 74.3% | 82.9% |

## Math Performance by Income Group

| Year | Low-Income | Non-Low-Income |
| --- | --- | --- |
| 2023 | 45.5% | 54.7% |
| 2024 | 42.2% | 52.3% |
| 2025 | 43.3% | 57.2% |

## Reading Performance by English Learner Status

| Year | English Learners | English Native |
| --- | --- | --- |
| 2023 | 25.0% | 78.8% |
| 2024 | N/A | 80.5% |
| 2025 | 33.3% | 77.3% |

## Math Performance by English Learner Status

| Year | English Learners | English Native |
| --- | --- | --- |
| 2023 | 24.0% | 48.5% |
| 2024 | N/A | 45.8% |
| 2025 | 35.7% | 46.0% |

## Reading Performance by Race and Ethnicity

| Group | Proficient % | Tested Students |
| --- | --- | --- |
| Hispanic or Latino | 75.7% | 251 |
| White | 75.5% | 151 |
| Asian | 90.7% | 139 |
| Black or African American | 75.8% | 33 |
| Two or more races | 70.8% | 24 |
| Filipino | 87.0% | 23 |

## Math Performance by Race and Ethnicity

| Group | Proficient % | Tested Students |
| --- | --- | --- |
| Hispanic or Latino | 39.4% | 249 |
| White | 48.3% | 151 |
| Asian | 80.4% | 138 |
| Black or African American | 24.2% | 33 |
| Two or more races | 45.8% | 24 |
| Filipino | 65.2% | 23 |

## Reading Score Distribution by Grade

| Grade | Tested Students | Not Met | Nearly Met | Met | Exceeded |
| --- | --- | --- | --- | --- | --- |
| 11 | 624 | 7.4% | 13.6% | 28.2% | 50.8% |

## Math Score Distribution by Grade

| Grade | Tested Students | Not Met | Nearly Met | Met | Exceeded |
| --- | --- | --- | --- | --- | --- |
| 11 | 621 | 26.3% | 22.9% | 22.7% | 28.2% |