Chaffey Joint Union High
Colony High
3850 East Riverside Drive, Ontario, CA 91761-2603
Summary
Colony High is underperforming.
53.7% of students are reading at grade level in Colony High, but it is quickly trending down.
Math is weaker at 20.9%; most students are not yet at grade level, and it is slowly trending down.
Proficiency Stats
| Current Reading Proficiency | 53.7% |
| Current Math Proficiency | 20.9% |
| Reading State Rank | 729/1609 (55th percentile) |
| Math State Rank | 750/1605 (53rd percentile) |
Other Stats
| Student / Teacher Ratio | 26:1 |
| Student Enrollment | 2,109 |
School Website
Great Schools
Niche
Ed-Data
CAASPP2-Year Trends
2023 - 2025
Reading -11.8%•Math -4.2%
•Math -4.2%Showing school-level proficiency for the last three years
Reading Proficiency Scores
Race and ethnicity proficiency plus distribution of scores by grade.
Race and Ethnicity
Distribution of Scores by Grade
Math Proficiency Scores
Race and ethnicity proficiency plus distribution of scores by grade.
Race and Ethnicity
Distribution of Scores by Grade