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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.Trending down

Math is weaker at 20.9%; most students are not yet at grade level, and it is slowly trending down.Trending down

Proficiency Stats
Current Reading Proficiency53.7%
Current Math Proficiency20.9%
Reading State Rank729/1609 (55th percentile)
Math State Rank750/1605 (53rd percentile)
Other Stats
Student / Teacher Ratio26:1
Student Enrollment2,109
Low-Income Students1,560 (74.0%)
English Learners191 (9.1%)
Quick links
School WebsiteGreat SchoolsNicheEd-DataCAASPP
2-Year Trends
2023 - 2025
Reading -11.8%Trend down•Math -4.2%Trend down
Showing school-level proficiency for the last three years

Reading Proficiency Scores

Race, economic status, English learner status, and distribution of scores by grade.

Race and Ethnicity
Distribution of Scores by Grade
Low-Income vs Non-Low-Income
Low-Income
Non-Low-Income
Low-Income -13.6%Trend down•
Non-Low-Income -7.0%Trend down
Showing subgroup proficiency for the last three years
English Learners vs English Native
English Learners
English Native
English Learners +1.1%Trend up•
English Native -16.3%Trend down
Showing subgroup proficiency for the last three years

Math Proficiency Scores

Race, economic status, English learner status, and distribution of scores by grade.

Race and Ethnicity
Distribution of Scores by Grade
Low-Income vs Non-Low-Income
Low-Income
Non-Low-Income
Low-Income -5.6%Trend down•
Non-Low-Income -0.8%Trend down
Showing subgroup proficiency for the last three years
English Learners vs English Native
English Learners
English Native
English Learners -0.8%Trend down•
English Native -8.4%Trend down
Showing subgroup proficiency for the last three years
Markdown Version