Average
#3764 of 9,539 schools in CA
Top 39% in state
Diamond Ranch High
High School · Pomona Unified
100 Diamond Ranch Dr., Pomona, CA 91766
Enrollment
1,567
Student-Teacher
23:1
Score
6.9
Grades
9th – 12th
Enrollment
1,567
Student-Teacher
23:1
Score
6.9
Grades
9th – 12th
Data vintage
2022-23
Data vintage2022-23
How this school compares
California schools
#3,764 of 9,539
In Pomona
#10 of 34
public schools
In district
#11 of 36
Pomona Unified
Equity
8.5 / 10
Excellent
Shortlisting around Diamond Ranch High?
Use this profile as one decision point, then compare nearby options, source confidence, and commute fit before picking a neighborhood around it.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
Diamond Ranch High
High School in Pomona · grades 9th – 12th. Start here, then compare fit against nearby and district options.
Ranch Hills Elementary
1.0 mi away. Use as a geographic alternative in the same move search.
Decker Elementary
1.1 mi away. Use as a geographic alternative in the same move search.
About Diamond Ranch High
Diamond Ranch High is a public high school in Pomona, CA, part of Pomona Unified. Diamond Ranch High serves approximately 1,567 students, and covers grades 9th-12th, and has a 23:1 student-teacher ratio. Diamond Ranch High has a current MySchoolScout rating of 6.9 out of 10 and ranks #3,764 of 9,539 schools in CA.
Structured state assessment records for Diamond Ranch High show 44% math proficiency (multi-year average, 2009-2024) and 68% reading/ELA proficiency (multi-year average, 2009-2024).
- This school 6.9 · Average
- District avg 6.8
- CA avg 6.5
What Parents Should Know
Diamond Ranch High runs 23:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
View breakdown
View breakdown
View breakdown
Diamond Ranch High — Students at Diamond Ranch High score 46% proficient, which is above what's typical for similar communities (expected: 30%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
79.3%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 26 test records from CA state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
Source: EdFacts (NCES) and state assessment data. Growth score: 4.6/10.
How Diamond Ranch High Compares
See how Diamond Ranch High performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
100 Diamond Ranch Dr., Pomona, CA 91766
Nearby Alternatives
Families considering Diamond Ranch High may also want to explore other high schools in the area. Fremont Academy of Engineering and Design (rated 7.0/10, 1.8 miles away), with a very similar rating. Additionally, Garey High (rated 6.4/10, 1.8 miles away), with a comparable rating. For more schools in Pomona, see our Pomona schools guide .
Nearby Schools
20 within 2.0 mi| School | Distance | Rating |
|---|---|---|
| Ranch Hills Elementary Pomona | 1.0 mi | 5.7 |
| Decker Elementary Pomona | 1.1 mi | 5.2 |
| Pantera Elementary Diamond Bar | 1.0 mi | 8.7 |
| GUIDE ACADEMY Diamond Bar | 1.1 mi | 5.9 |
| Golden Springs Elementary Diamond Bar | 1.3 mi | 6.0 |
| Westmont Elementary Pomona | 1.9 mi | 6.8 |
| Lexington Elementary Pomona | 1.7 mi | 8.2 |
| Fremont Academy of Engineering and Design Pomona | 1.8 mi | 7.0 |
| Lorbeer Middle Diamond Bar | 1.7 mi | 6.8 |
| Garey High Pomona | 1.8 mi | 6.4 |
| Oak Crest Academy Independent Studies Pomona | 1.8 mi | — |
| Oak Crest Academy - Pomona Pomona | 1.8 mi | — |
| DIAMOND BAR MONTESSORI ACADEMY Diamond Bar | 1.8 mi | 5.3 |
| Vejar Elementary Pomona | 2.0 mi | 7.0 |
| MT CALVARY LUTHERAN SCHOOL Diamond Bar | 1.9 mi | 6.2 |
| VILLAGE MONTESSORI ACADEMY Diamond Bar | 1.9 mi | — |
| VILLAGE MONTESSORI ACADEMY Diamond Bar | 1.9 mi | — |
| LiMai Montessori Academy Diamond Bar | 1.9 mi | — |
| Mt Calvary Lutheran Diamond Bar | 1.9 mi | — |
| Eagle Canyon Elementary Chino | 2.0 mi | 7.9 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 91766 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$77,699
Median Home Value
$568,300
Median Rent
$1,776/mo
Population
68,673
College Educated
19.9%
Homeownership
53.4%
Avg Commute
31.2 min
Poverty Rate
12.8%
Median Age
34.9
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Alliance Marine - Innovation and Technology 6-12 Complex Sun Valley, CA | 6.9 |
| Bloomington High Bloomington, CA | 6.9 |
| Brea Olinda High Brea, CA | 6.9 |
| Central Union High El Centro, CA | 6.9 |
| Don Antonio Lugo High Chino, CA | 6.9 |
| Fullerton Union High Fullerton, CA | 6.9 |
Frequently Asked Questions
Common questions about Diamond Ranch High
What grades does Diamond Ranch High serve?
Diamond Ranch High serves students in grades 9th through 12th.
How many students attend Diamond Ranch High?
Diamond Ranch High has an enrollment of approximately 1,567 students.
What is the student-teacher ratio at Diamond Ranch High?
The student-teacher ratio at Diamond Ranch High is 23:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Diamond Ranch High rank in CA?
Diamond Ranch High ranks #3,764 of 9,539 schools in CA.
What is Diamond Ranch High's MySchoolScout rating?
Diamond Ranch High has a current MySchoolScout rating of 6.9 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Diamond Ranch High?
Based on loaded state assessment records, Diamond Ranch High has 44% math proficiency (multi-year average, 2009-2024) and 68% reading/ELA proficiency (multi-year average, 2009-2024).
Is Diamond Ranch High a charter school?
No, Diamond Ranch High is not a charter school. It is a traditional public school operated by the local school district.
Is Diamond Ranch High a Title I school?
No, Diamond Ranch High is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Diamond Ranch High?
79.3% of students at Diamond Ranch High qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 1,567
- Student-Teacher Ratio
- 23:1
- Teachers (FTE)
- 68
- Free/Reduced Lunch
- 79.3%
- Type
- regular
- Setting
- Large Suburb
- County
- Los Angeles County
- Chronic Absenteeism (SY 2022-23)
- 25.0%
- Phone
- (909) 397-4715
- 4-Year Graduation
- 97.0%
Resources & Links
District
Pomona Unified- District Enrollment
- 20,966
- Schools in District
- 37
- Per-Pupil Spending
- $20,301
- District Rank
- #11 of 36
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateRelated reading
- Best Elementary Schools in America: 2026 Rankingsbest schools
- Best Public Schools in California 2026: Top-Ranked Elementary, Middle & High Schoolsbest schools
- Best School Districts to Move To in 2026: A Data-Driven Guidebest schools
- Best Schools in Los Angeles, CA — 2026 Rankingsbest schools
- Best Schools in San Diego, CA — 2026 Rankingsbest schools
Get school insights in your inbox
New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.
We respect your privacy. Unsubscribe at any time.