Walnut · Los Angeles County
Schools in ZIP code 91789
Two districts run the ranked public schools in ZIP code 91789: Rowland Unified (elementary and middle) and Walnut Valley Unified (elementary, middle and high). The 7 public elementary schools in ZIP code 91789 run from the 71st to the 97th percentile among the 5,726 California elementary schools we score (spring 2026 tests).
Elementary · 7 schools · Walnut Valley Unified and Rowland Unified
from 71st to 97th · among 5,726 California elementary schools we score · spring 2026 tests
- Leonard G. Westhoff Elementary: 97th percentile, Strong
- Walnut Elementary: 93rd percentile, Strong
- Collegewood Elementary: 91st percentile, Strong
- Cyrus J. Morris Elementary: 88th percentile, Strong
- Stanley G. Oswalt Academy: 79th percentile, Strong
- Vejar Elementary: 72nd percentile, Solid
- Ybarra Academy for the Arts and Technology: 71st percentile, Solid
One dot per school.
A ZIP code doesn’t decide which school a child attends. Confirm the school for your address with the district.
Middle and high school pictures
Middle · 4 schools · Walnut Valley Unified and Rowland Unified
from 82nd to 97th · among 2,529 California middle schools we score · spring 2026 tests
- South Pointe Middle: 97th percentile, Strong
- Suzanne Middle: 93rd percentile, Strong
- Stanley G. Oswalt Academy: 83rd percentile, Strong
- Ybarra Academy for the Arts and Technology: 82nd percentile, Strong
High · 1 school · Walnut Valley Unified
at 93rd · among 1,498 California high schools we score · spring 2025 tests
- Walnut High: 93rd percentile, Strong
One dot per school. Each stage is placed only among California schools at its own level. 2 of the 10 ranked schools teach two levels, so they appear in more than one picture.
- 10 ranked schools
- 9 private schools, not scored
Schools around ZIP code 91789
10 listed public schools with mapped locations.
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Percentile among California schools at the same level
- Strong75th+
- Solid50–74th
- Developing25–49th
- Needs Supportbelow 25th
- Not scored
The school lists on this page are also available without the map.
These are the same schools listed on the Walnut page.
Elementary schools
Which elementary schools in ZIP code 91789 score highest?
Leonard G. Westhoff Elementary is highest, at the 97th percentile.
That’s higher than 97 in 100 of the 5,726 California elementary schools we score (spring 2026 tests).
Highest in ZIP code 91789
Each percentile compares a school with California schools at its own level. What patterns mean
- Leonard G. Westhoff ElementaryWalnut Valley Unified · High ceiling · Broad base
- Walnut ElementaryWalnut Valley Unified · High ceiling · Broad base
- Collegewood ElementaryWalnut Valley Unified · Broad base · Grade-to-grade gains
Show the other 4 elementary schools
- Cyrus J. Morris ElementaryWalnut Valley Unified
- Stanley G. Oswalt AcademyRowland Unified
- Vejar ElementaryWalnut Valley Unified
- Ybarra Academy for the Arts and TechnologyRowland Unified
The average elementary school in ZIP code 91789 had 7 in 100 students chronically absent (missed 10% or more of school days) in 2025–26; the average California elementary school we score had 17 in 100. Both are averages of school rates, each school counted once.
Middle schools
Which middle schools in ZIP code 91789 score highest?
South Pointe Middle is highest, at the 97th percentile.
That’s higher than 97 in 100 of the 2,529 California middle schools we score (spring 2026 tests).
Highest in ZIP code 91789
Each percentile compares a school with California schools at its own level. What patterns mean
- South Pointe MiddleWalnut Valley Unified · High ceiling · Broad base
- Suzanne MiddleWalnut Valley Unified · Broad base
- Stanley G. Oswalt AcademyRowland Unified
Show the other 1 middle school
- Ybarra Academy for the Arts and TechnologyRowland Unified
The average middle school in ZIP code 91789 had 7 in 100 students chronically absent in 2025–26; the average California middle school we score had 18 in 100.
High schools
Where does the high school we score in ZIP code 91789 stand?
Walnut High is at the 93rd percentile.
That’s higher than 93 in 100 of the 1,498 California high schools we score (spring 2025 tests). It’s the only public high school we score in ZIP code 91789.
Each percentile compares a school with California schools at its own level. What patterns mean
- Walnut HighWalnut Valley Unified · Broad base
9 private schools have an address in ZIP code 91789. They don’t take California’s state tests, so we don’t score them. See them in the private-school directory →
Which places nearby can you look at next?
Nearby ZIP codes
More places (8)
School districts
City
Before kindergarten
Common questions
Which public schools in ZIP code 91789 rank highest?
Does living in ZIP code 91789 decide which school my child attends?
More questions (3)
Are the public schools in ZIP code 91789 good?
How does chronic absence in ZIP code 91789 compare with California?
Where do these results come from?
Sources and methodology
This page lists the schools with a 91789 mailing address. Attendance zones follow school districts rather than postal boundaries.
Data source: California Department of Education · CAASPP 2025–26 elementary and middle school; 2024–25 high school
Percentiles, bands and Scope Scores are SchoolScope’s own calculations from these state files.
Download these schools (CSV)Free to use under CC BY 4.0 with attribution.