Diamond Ranch High
🇺🇸 Official data · 2025Pomona, California 91766 · Pomona Unified
#520 of 1,343 high schools in California
#10304 of 16,910 nationally
About Diamond Ranch High
Diamond Ranch High is a public high located in Pomona, in the Pomona Unified school district of California, United States. It caters for Grades 9–12. In 2025 it enrolled 1,542 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 42.6 out of 100, placing it in the lower 50% of high schools in United States and 520th of 1,343 ranked high schools in California. Its strongest component is reading proficiency (74th percentile), and its weakest is students per teacher (9th percentile).
Other published figures: enrollment 1,542.
There are 31 schools in Pomona; Diamond Ranch High ranks 2nd of 30 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)36%
- Reading proficiency (30%)71%
- Community advantage (fewer free/reduced-price lunch) (25%)78.7%
- Students per teacher (15%)22.7
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Diamond Ranch High by the official sources.
- Enrollment
- 1,542
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 78.7%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 22.7
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 71%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 36%
- Share of tested students proficient or above (all students, all grades).
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Schools near Diamond Ranch High
Closest schools by straight-line distance, with their Success Index (US).
Ranch Hills Elementary
Pomona · Public elementary · Grades K–6
449 students · 1.6 km away
Pantera Elementary
Diamond Bar · Public elementary · Grades K–6
512 students · 1.7 km away
Decker Elementary
Pomona · Public elementary · Grades K–6
437 students · 1.7 km away
Golden Springs Elementary
Diamond Bar · Public elementary · Grades K–6
388 students · 2.1 km away
Lexington Elementary
Pomona · Public elementary · Grades K–8
537 students · 2.7 km away
Lorbeer Middle
Diamond Bar · Public middle · Grades 7–8
688 students · 2.8 km away
Fremont Academy of Engineering and Design
Pomona · Public high · Grades 7–12
597 students · 2.9 km away
Garey High
Pomona · Public high · Grades 9–12
1,567 students · 3.0 km away
Westmont Elementary
Pomona · Public elementary · Grades K–6
327 students · 3.0 km away
Eagle Canyon Elementary
Chino Hills · Public elementary · Grades K–6
631 students · 3.2 km away
Similar schools
Public high schools in California with a comparable Enrollment.
Monte Vista High
Spring Valley · Public high · Grades 9–12
1,543 students
Los Banos High
Los Banos · Public high · Grades 9–12
1,543 students
Willow Glen High
San Jose · Public high · Grades 9–12
1,543 students
Loara High
Anaheim · Public high · Grades 9–12
1,539 students
Mount Miguel High
Spring Valley · Public high · Grades 9–12
1,539 students
Northgate High
Walnut Creek · Public high · Grades 9–12
1,546 students
Frequently asked questions
Is Diamond Ranch High a good school?
Diamond Ranch High has a Success Index (US) of 42.6 out of 100 (Lower 50% of high schools in United States) and ranks #520 of 1,343 in California. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Diamond Ranch High rank in California?
Diamond Ranch High ranks #520 of 1,343 high schools in California and #10304 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Diamond Ranch High?
Diamond Ranch High had 1,542 students in 2025.
Is Diamond Ranch High a elementary school or a high school?
Diamond Ranch High is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Diamond Ranch High?
There are 10 schools within 15 km of Diamond Ranch High; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.