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What clubs or activities at Ontario High are worth joining?
Community prompt from u/allk12. Replies below.
Enrollment
1,994
High
DISTRICT 2,004 · STATE 838
SCHOOL COMMUNITY·CHAFFEY JOINT UNION HIGH·NCES 060816000795
Ontario High
901 West Francis St., Ontario, CA 91762 · (909) 988-7411 · San Bernardino County
GRADES 09–12HIGH12-CITYTITLE IREGULAR SCHOOL1,994 STUDENTS
A-
allk12 Grade
Scored higher than 79% of California public high schools
- BTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ABeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- B+Three-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
21.9:1
91 FTE teachers
DISTRICT 21.6:1 · STATE 18.2:1
Free / Reduced Lunch
87%
1,728 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 | 25% |
| Grade 10 | 507 | 25% |
| Grade 11 | 528 | 26% |
| Grade 12 | 452 | 23% |
Student demographics
21%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
62.5%
CA avg 49.1% . -0.5pp since 2014
Math
29.6%
CA avg 37.7% . +1.6pp since 2014
What this means: On the CAASPP, California's statewide test, about 63 of every 100 students at this school read and write at grade level and about 30 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores have held steady since 2014, while math scores are up about 2 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 27.5% | 35.0% | 20.2% | 17.2% |
| Math | 11.7% | 17.8% | 22.3% | 48.2% |
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 | 62.5% | 29.6% |
| 2023-24 | 61.9% | 20.1% |
| 2022-23 | 60.5% | 20.8% |
| 2021-22 | 59.9% | 22.0% |
| 2020-21 | 56.3% | 29.0% |
| 2018-19 | 51.6% | 27.5% |
| 2017-18 | 64.2% | 34.3% |
| 2016-17 | 62.6% | 34.6% |
| 2015-16 | 63.0% | 33.0% |
| 2014-15 | 63.0% | 28.0% |
% 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
OUTPERFORMING
Top 10% of CA schools after controlling for student poverty
Actual proficiency
43.5%
composite math + reading, all grades
Predicted
28.8%
based on CA schools with similar FRL share
Beats by
+14.8pp
above demographic expectation
What this means: About 44% of students here test proficient in math and reading, well above the roughly 29% typical for California schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 15 points, placing it in California's top 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 Ontario High
Ontario High's state test result (43.5% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Ontario High this school | 1,994 | 86.7% | 43.5% |
| Bloomington High Bloomington | 1,794 | 87.2% | 28.6% |
| Foothill High Bakersfield | 2,043 | 87.8% | 27.9% |
| Jurupa Hills High Fontana | 1,739 | 84.9% | 40.8% |
| Orange Glen High Escondido | 1,788 | 89.0% | 29.8% |
| Orange High Orange | 1,728 | 86.9% | 23.4% |
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 Ontario High ranks
Among high schools| Measure | This school | In California | In San Bernardino County |
|---|---|---|---|
| State test proficiency ranked highest first | 43.5% | #442 of 1,052 | #19 of 54 |
| Math proficiency ranked highest first | 29.6% | #440 of 1,056 ▲ 166 | #18 of 56 ▲ 8 |
| Reading proficiency ranked highest first | 62.5% | #409 of 1,056 ▼ 17 | #21 of 56 ▼ 2 |
| 3-year test score change ranked biggest gain first | +5.1pp | #341 of 1,044 | #31 of 56 |
| Enrollment ranked largest first | 1,994 | #293 of 2,093 | #32 of 102 |
| Students per teacher ranked fewest first | 21.9:1 | #827 of 1,352 | #42 of 78 |
| Diversity index ranked most diverse first | 20.6% | #1,092 of 1,351 | #69 of 77 |
| Free and reduced lunch ranked highest share first | 86.7% | #421 of 1,575 | #22 of 84 |
| Enrollment change since 2017-18 ranked steepest decline first | -16.5% | #252 of 802 | #10 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
1,994
-328 (-14%) vs 2020
-13% since 1990-91, when it was 2,299
Student : Teacher
21.9:1
was 22.5:1
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 | 1,994 | 91.3 | 21.9:1 | 87% (1,728) |
| 2023-24 | 2,121 | 95.5 | 22.2:1 | 87% (1,853) |
| 2022-23 | 2,182 | 96.7 | 22.6:1 | 85% (1,865) |
| 2020-21 | 2,322 | 103 | 22.5:1 | 89% (2,064) |
| 2017-18 | 2,388 | 100.3 | 23.8:1 | 86% (2,063) |
| 2015-16 | 2,463 | 102 | 24.1:1 | 87% (2,145) |
| 2010-11 | 2,932 | N/A | N/A | 70% (2,067) |
| 2000-01 | 2,923 | 119 | 24.6:1 | 23% (685) |
| 1990-91 | 2,299 | 104 | 22.1:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Ontario High.
Since 2017-18: students down 16% (2,388 to 1,994); teachers down 9% (100.3 to 91.3).
About Ontario High
Ontario High is a large high school for students in Ontario, California. Enrolled students number 1,994 students, in grades 9 through 12. Enrollment is 138% higher than the average for high schools in California, which is about 838.
A total of 11 schools make up Chaffey Joint Union High, with 22,040 students enrolled.
At Ontario High, Hispanic students make up 89% of the student body. Smaller groups are 3% Asian, 3% Black, and 2% White. County-wide, 55% of San Bernardino County residents are Hispanic. The chance that two students picked at random at Ontario High belong to different racial or ethnic groups, known as the diversity index, is 21%.
Teachers at Ontario High total 91.3 full-time equivalents, and the ratio is 21.9:1. The 18.2:1 average for high schools in California is lower than this school's figure. The school counts 1,728 students as eligible for free or reduced-price lunch, or 87%. That is 13 points above the 74% average for public schools in San Bernardino County.
Ontario High is graded A- by allk12, scoring above 79% of California public high schools once test results, poverty-adjusted performance, and the recent trend are combined.
Ontario High beats its predicted average proficiency rate on state tests by 14.8 points (43.5% versus 28.8%), a top-10% result in California on BeatsExpectations.
Ontario High is located in San Bernardino County, where median household income is about $85,478, roughly 23% of adults have a four-year degree or more, and about 11% of residents live below the federal poverty line. Federal data list 583 public schools in San Bernardino County, with a combined enrollment of about 393,648.
Richard Haynes Elementary is the nearest neighboring public school, about 0.2 miles away. Counting only straight-line distance, at least 8 other public schools are within five miles. Its average proficiency rate of 43.5% is above the 37.4% average for nearby schools.
Ontario High falls in the City: Mid-size locale category, used for schools inside a principal city with a population between 100,000 and 250,000.
From 2020-21 to 2024-25, Ontario High went from 2,322 students to 1,994.
Posts about sports tryouts, band and choir, and theater are welcome on this page. Reviews and ratings from people who know the school are welcome.
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
- Colony HighHigh · 2,109 students
- Park View ElementaryElementary · 844 students
- Ranch View ElementaryElementary · 738 students
- Central Language AcademyElementary · 736 students
- Edison ElementaryElementary · 736 students
Other Ontario High schools
2 other US public schools in 3 states are named Ontario High. Ontario High is the largest of the 3.
- Ontario High SchoolOntario, OR · 709 students
- Ontario High SchoolMansfield, OH · 540 students
Nearby schools
- Richard Haynes Elementary0.2 mi · 641
- Vista Grande Elementary0.6 mi · 358
- Oaks Middle1.0 mi · 668
- Euclid Elementary1.2 mi · 572
- Sultana Elementary1.2 mi · 589
- De Anza Middle1.2 mi · 510
Frequently asked questions
About Ontario HighWhat is the total enrollment at Ontario High?
Ontario High enrolls approximately 1,994 students in grades 09-12.
Is Ontario High an elementary, middle, or high school?
Ontario High is a high school covering grades 09-12.
How many teachers does Ontario High have?
Ontario High employs 91 FTE teachers, for a student-to-teacher ratio of 21.9:1.
How diverse is Ontario High?
Ontario High reports a student body of 2% White, 89% Hispanic, 3% Black, 3% Asian, 2% Two or more.
Who oversees Ontario High?
Ontario High is overseen by Chaffey Joint Union High in San Bernardino County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.