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What advice would you give to incoming students at Colony High?
Community prompt from u/allk12. Replies below.
Enrollment
2,109
High
DISTRICT 2,004 · STATE 838
SCHOOL COMMUNITY·CHAFFEY JOINT UNION HIGH·NCES 060816010606
Colony High
3850 East Riverside Dr., Ontario, CA 91761 · (909) 930-2929 · San Bernardino County
GRADES 09–12HIGH12-CITYTITLE IREGULAR SCHOOL2,109 STUDENTS
C+
allk12 Grade
Scored higher than 36% of California public high schools
- B-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- B-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- DThree-year trend Change in reading and math proficiency over the last three test years.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded California public high schools
Student : Teacher
25.9:1
81 FTE teachers
DISTRICT 21.6:1 · STATE 18.2:1
Free / Reduced Lunch
70%
1,470 students
DISTRICT 70% · STATE 65%
Community
6
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 507 | 24% |
| Grade 10 | 550 | 26% |
| Grade 11 | 517 | 25% |
| Grade 12 | 535 | 25% |
Student demographics
53%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 55% · STATE 62% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
53.7%
CA avg 49.1% . -5.3pp since 2014
Math
20.9%
CA avg 37.7% . -10.1pp since 2014
What this means: On the CAASPP, California's statewide test, about 54 of every 100 students at this school read and write at grade level and about 21 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are down about 5 points since 2014, while math scores are down about 10 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 23.0% | 30.7% | 27.4% | 18.9% |
| Math | 8.5% | 12.4% | 27.4% | 51.7% |
Share of tested students at each CAASPP level. Each student counts in one level, so a row adds to about 100%.
CAASPP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 53.7% | 20.9% |
| 2023-24 | 58.3% | 18.9% |
| 2022-23 | 65.6% | 25.2% |
| 2021-22 | 62.0% | 24.7% |
| 2020-21 | 66.7% | 41.0% |
| 2018-19 | 60.2% | 34.5% |
| 2017-18 | 59.8% | 37.6% |
| 2016-17 | 48.0% | 32.4% |
| 2015-16 | 62.0% | 28.0% |
| 2014-15 | 59.0% | 31.0% |
% met or exceeded standard, all students and all tested grades.
Source: CAASPP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
38.0%
composite math + reading, all grades
Predicted
38.7%
based on CA schools with similar FRL share
Beats by
-0.7pp
below demographic expectation
What this means: About 38% of students here test proficient in math and reading, compared with the roughly 39% typical for California schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among California's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Colony High
Colony High's state test result (38.0% proficient) is higher than 3 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Colony High this school | 2,109 | 69.7% | 38.0% |
| Mayfair High Lakewood | 2,422 | 70.4% | 38.6% |
| Stagg Senior High Stockton | 1,677 | 74.6% | 25.4% |
| Summit High Fontana | 2,725 | 72.1% | 51.5% |
| Hayward High Hayward | 1,580 | 75.1% | 33.4% |
| Cabrillo High Long Beach | 1,652 | 72.8% | 24.3% |
Matched among California high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Colony High ranks
Among high schools| Measure | This school | In California | In San Bernardino County |
|---|---|---|---|
| State test proficiency ranked highest first | 38.0% | #581 of 1,052 | #27 of 54 |
| Math proficiency ranked highest first | 20.9% | #644 of 1,056 no change | #32 of 56 ▼ 3 |
| Reading proficiency ranked highest first | 53.7% | #613 of 1,056 ▼ 147 | #30 of 56 ▼ 7 |
| 3-year test score change ranked biggest drop first | -6.0pp | #98 of 1,044 | #3 of 56 |
| Enrollment ranked largest first | 2,109 | #227 of 2,093 | #28 of 102 |
| Students per teacher ranked fewest first | 25.9:1 | #1,266 of 1,352 | #70 of 78 |
| Diversity index ranked most diverse first | 52.8% | #617 of 1,351 | #26 of 77 |
| Free and reduced lunch ranked highest share first | 69.7% | #876 of 1,575 | #61 of 84 |
| Enrollment change since 2017-18 ranked steepest decline first | -2.9% | #710 of 802 | #38 of 46 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
2,109
-53 (-2%) vs 2020
-7% since 2010-11, when it was 2,260
Student : Teacher
25.9:1
was 24.3:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 2,109 | 81.3 | 25.9:1 | 70% (1,470) |
| 2023-24 | 2,085 | 87.3 | 23.9:1 | 72% (1,506) |
| 2022-23 | 2,122 | 87.9 | 24.1:1 | 71% (1,502) |
| 2020-21 | 2,162 | 89 | 24.3:1 | 74% (1,601) |
| 2017-18 | 2,173 | 91.9 | 23.6:1 | 74% (1,615) |
| 2015-16 | 2,135 | 83 | 25.7:1 | 73% (1,553) |
| 2010-11 | 2,260 | N/A | N/A | 52% (1,168) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Colony High.
Since 2017-18: students down 3% (2,173 to 2,109); teachers down 12% (91.9 to 81.3).
About Colony High
Colony High is classified as a high school. It is located in Ontario, California. Its 2,109 students are spread across grades 9 through 12. The school's enrollment is 152% larger than the 838 average for high schools in California.
Colony High is one of the 11 schools that make up Chaffey Joint Union High (22,040 students in total).
Hispanic students make up a majority at Colony High, at 66%. The remaining students are 13% Black, 9% Asian, 7% White, and 3% multiracial. Census figures show San Bernardino County is about 55% Hispanic. Colony High's diversity index is 53%, against a US figure of 70%.
Colony High employs 81.3 full-time-equivalent teachers. That gives a ratio of about 25.9:1. This ratio sits 7.7 above the 18.2:1 average for high schools in California. Federal records put free or reduced-price lunch eligibility at 70%.
Measured against California public high schools, Colony High receives a C+. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.
A school with Colony High's lunch-eligibility share in California is predicted to score 38.7%. Colony High scores 38.0%, within a point of that line.
Recent Census Bureau figures for San Bernardino County show that the median household income is $85,478, roughly 23% of adults have a four-year degree or more, and the share of residents below the poverty line is 11%. Colony High is one of 583 public schools in the county.
The closest public school to Colony High is Creek View Elementary, about 0.5 miles away. Counting only straight-line distance, at least 8 other public schools are within five miles. On proficiency, Colony High is behind the 39.6% nearby average, ranking 5th of 9.
The school's setting, by NCES definition, is City: Mid-size: inside a principal city with a population between 100,000 and 250,000.
Over 4 years, enrollment stayed close to where it was, going from 2,162 to 2,109. Staffing shifted too: the ratio moved from 24.3:1 to 25.9:1.
Topics for discussion here include school events, clubs, and volunteer needs. Alumni can share how the school prepared them.
San Bernardino County at a glance
View full county profilePopulation
2,197,104
Census ACS
Median income
$85,478
Household, ACS
Bachelor's+
23%
Adults 25+
Poverty rate
11%
Below federal line
Schools in county
583
393,648 students
Quick facts
Related schools
Other schools in Chaffey Joint Union High
- Etiwanda HighHigh · 3,446 students
- Rancho Cucamonga HighHigh · 3,221 students
- Chaffey HighHigh · 3,127 students
- Los Osos HighHigh · 2,759 students
- Montclair HighHigh · 2,515 students
- Alta Loma HighHigh · 2,386 students
Other schools in Ontario
- Chaffey HighHigh · 3,127 students
- Ontario HighHigh · 1,994 students
- Park View ElementaryElementary · 844 students
- Ranch View ElementaryElementary · 738 students
- Central Language AcademyElementary · 736 students
- Edison ElementaryElementary · 736 students
Other Colony High schools
One other US public school is named Colony High. Colony High is the largest of the 2.
- Colony High SchoolPalmer, AK · 1,046 students
Nearby schools
- Creek View Elementary0.5 mi · 566
- Grace Yokley Junior High0.9 mi · 606
- Ranch View Elementary1.2 mi · 738
- Mountain View Elementary1.5 mi · 564
- Del Sol Academy2.2 mi · 1,213
- Park View Elementary2.4 mi · 844
Frequently asked questions
About Colony HighHow many students attend Colony High?
Colony High enrolls approximately 2,109 students in grades 09-12.
Is Colony High an elementary, middle, or high school?
Colony High is a high school covering grades 09-12.
How many teachers does Colony High have?
Colony High employs 81 FTE teachers, for a student-to-teacher ratio of 25.9:1.
What is the student diversity at Colony High?
Student demographics at Colony High are roughly 7% White, 66% Hispanic, 13% Black, 9% Asian, 3% Two or more.
Is Colony High public or private?
Colony High is a public K-12 school, overseen by Chaffey Joint Union High.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.