1
What's the state of after-school transportation at Diamond Ranch High?
Community prompt from u/allk12. Replies below.
Enrollment
1,542
High
DISTRICT 870 · STATE 838
SCHOOL COMMUNITY·POMONA UNIFIED·NCES 063132007136
Diamond Ranch High
100 Diamond Ranch Dr., Pomona, CA 91766 · (909) 397-4715 · Los Angeles County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL1,542 STUDENTS
A-
allk12 Grade
Scored higher than 75% 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.
- C+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
22.5:1
68 FTE teachers
DISTRICT 18.7:1 · STATE 18.2:1
Free / Reduced Lunch
79%
1,213 students
DISTRICT 87% · 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 | 404 | 26% |
| Grade 10 | 377 | 24% |
| Grade 11 | 405 | 26% |
| Grade 12 | 356 | 23% |
Student demographics
38%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 28% · 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
67.9%
CA avg 49.1% . +1.9pp since 2014
Math
26.3%
CA avg 37.7% . -0.7pp since 2014
What this means: On the CAASPP, California's statewide test, about 68 of every 100 students at this school read and write at grade level and about 26 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are up about 2 points since 2014, while math scores have held steady.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 32.4% | 35.5% | 16.6% | 15.5% |
| Math | 9.5% | 16.8% | 23.7% | 50.0% |
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 | 67.9% | 26.3% |
| 2023-24 | 66.0% | 25.6% |
| 2022-23 | 68.3% | 23.7% |
| 2021-22 | 66.2% | 27.1% |
| 2018-19 | 71.9% | 36.5% |
| 2017-18 | 60.9% | 24.7% |
| 2016-17 | 68.6% | 31.4% |
| 2015-16 | 69.0% | 33.0% |
| 2014-15 | 66.0% | 27.0% |
% 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
46.4%
composite math + reading, all grades
Predicted
33.5%
based on CA schools with similar FRL share
Beats by
+13.0pp
above demographic expectation
What this means: About 46% of students here test proficient in math and reading, compared with the roughly 33% 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 Diamond Ranch High
Diamond Ranch High's state test result (46.4% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Diamond Ranch High this school | 1,542 | 78.7% | 46.4% |
| Tennyson High Hayward | 1,511 | 83.9% | 15.3% |
| Mt. Diablo High Concord | 1,397 | 80.0% | 23.2% |
| Montgomery Senior High San Diego | 1,568 | 80.7% | 38.3% |
| Ygnacio Valley High Concord | 1,059 | 81.5% | 22.0% |
| Chino High Chino | 2,077 | 76.8% | 37.7% |
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 Diamond Ranch High ranks
Among high schools| Measure | This school | In California | In Los Angeles County |
|---|---|---|---|
| State test proficiency ranked highest first | 46.4% | #382 of 1,052 | #84 of 228 |
| Math proficiency ranked highest first | 26.3% | #501 of 1,056 ▼ 47 | #119 of 229 ▼ 23 |
| Reading proficiency ranked highest first | 67.9% | #290 of 1,056 ▲ 26 | #60 of 229 ▲ 7 |
| 3-year test score change ranked biggest gain first | +0.5pp | #627 of 1,044 | #179 of 229 |
| Enrollment ranked largest first | 1,542 | #550 of 2,093 | #107 of 486 |
| Students per teacher ranked fewest first | 22.5:1 | #935 of 1,352 | #270 of 358 |
| Diversity index ranked most diverse first | 37.5% | #887 of 1,351 | #164 of 359 |
| Free and reduced lunch ranked highest share first | 78.7% | #648 of 1,575 | #247 of 396 |
| Enrollment change since 2017-18 ranked steepest decline first | -5.5% | #619 of 802 | #187 of 227 |
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
1,542
-22 (-1%) vs 2020
-8% since 2000-01, when it was 1,679
Student : Teacher
22.5:1
was 22.7:1
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 | 1,542 | 68.5 | 22.5:1 | 79% (1,213) |
| 2023-24 | 1,567 | 68.5 | 22.9:1 | 79% (1,243) |
| 2022-23 | 1,547 | 66.7 | 23.2:1 | 78% (1,200) |
| 2020-21 | 1,564 | 69 | 22.7:1 | 77% (1,203) |
| 2017-18 | 1,631 | 70 | 23.3:1 | 60% (984) |
| 2015-16 | 1,694 | 71 | 23.9:1 | 54% (919) |
| 2010-11 | 1,833 | N/A | N/A | 38% (691) |
| 2000-01 | 1,679 | 69 | 24.3:1 | 23% (388) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Diamond Ranch High.
Since 2017-18: students down 5% (1,631 to 1,542); teachers down 2% (70 to 68.5).
About Diamond Ranch High
In Pomona, California, part of Los Angeles County, Diamond Ranch High is a high school. Enrollment stands at 1,542 students, covering grades 9 through 12. It has 84% more students than the average for high schools in California (about 838).
Pomona Unified counts 37 schools and 20,422 students, including Diamond Ranch High.
The share of Hispanic students at Diamond Ranch High is 78%, a majority. Other students are 10% Asian, 5% Black, 3% White, and 3% multiracial. That is higher than the 48% Hispanic share among all Los Angeles County residents. A diversity index of 38% means there is a 38% chance two randomly chosen students at Diamond Ranch High are from different groups.
Diamond Ranch High has 68.5 full-time-equivalent teachers, for a student-to-teacher ratio of about 22.5:1. The school's 22.5:1 compares with an average of 18.2:1 for high schools in California. Eligibility for free or reduced-price lunch, often used to gauge student poverty, is 79%. That is higher than the 70% average for public schools in Los Angeles County.
On the allk12 Grade, Diamond Ranch High lands at A-, ahead of 75% of California public high schools.
BeatsExpectations compares each school's average proficiency rate across its state test results with a prediction based on free or reduced-price lunch eligibility. For Diamond Ranch High, the prediction is 33.5% and the result is 46.4%.
For Los Angeles County, Census Bureau data show the median household earns about $90,112 a year, roughly 36% of adults have a four-year degree or more, and the share of residents below the poverty line is 10%. Public schools in Los Angeles County number 2,244, with about 1,265,907 students.
Ranch Hills Elementary is about 1.0 miles away, making it the nearest public school. Other public schools within five miles number at least 8. Ranked by average proficiency, Diamond Ranch High places 4th out of 9 schools in its immediate area.
Diamond Ranch High has an NCES locale of Suburb: Large.
From 2020-21 to 2024-25, enrollment held near 1,542, starting from 1,564.
The discussion board for Diamond Ranch High is open to topics like pickup and drop-off, after-school programs, and teacher feedback. Parents, students, alumni, and staff are welcome to post.
Los Angeles County at a glance
View full county profilePopulation
9,808,667
Census ACS
Median income
$90,112
Household, ACS
Bachelor's+
36%
Adults 25+
Poverty rate
10%
Below federal line
Schools in county
2,244
1,265,907 students
Quick facts
Related schools
Other schools in Pomona Unified
- Garey HighHigh · 1,567 students
- School of Extended Educational OptionsCombined · 1,204 students
- Pomona HighHigh · 993 students
- Ganesha HighHigh · 895 students
- Vejar ElementaryElementary · 741 students
- Lorbeer MiddleMiddle · 688 students
Other schools in Pomona
- Garey HighHigh · 1,567 students
- School of Extended Educational OptionsCombined · 1,204 students
- Pomona HighHigh · 993 students
- Ganesha HighHigh · 895 students
- Vejar ElementaryElementary · 741 students
- Emerson MiddleMiddle · 664 students
Nearby schools
- Ranch Hills Elementary1.0 mi · 449
- Pantera Elementary1.0 mi · 512
- Decker Elementary1.1 mi · 437
- Golden Springs Elementary1.3 mi · 388
- Lexington Elementary1.7 mi · 537
- Lorbeer Middle1.7 mi · 688
Frequently asked questions
About Diamond Ranch HighHow many students attend Diamond Ranch High?
Diamond Ranch High enrolls approximately 1,542 students in grades 09-12.
What age range does Diamond Ranch High serve?
Diamond Ranch High serves students from grade 09 through grade 12.
How many students per teacher at Diamond Ranch High?
Approximately 22.5:1 students per teacher at Diamond Ranch High.
How diverse is Diamond Ranch High?
Diamond Ranch High reports a student body of 3% White, 78% Hispanic, 5% Black, 10% Asian, 3% Two or more.
What district is Diamond Ranch High in?
Diamond Ranch High is part of Pomona Unified.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.