Scores updated for 2026!

Walnut Valley Unified

Los Angeles County school performance

Summary

Walnut Valley Unified is a good district.

Reading and math results average to the 94th percentile among California school districts.

75.5% of students met California's reading standard, but it is trending down slightly.Trending down

72.5% of students met California's math standard, which is strong statewide, it is holding steady.

Proficiency Stats
Current Reading Proficiency75.5%
Current Math Proficiency72.5%
District Reading Rank62 / 977 (94th percentile)
District Math Rank50 / 977 (95th percentile)
Other Stats
Student / Teacher Ratio25:1
Spend per Student$16,044
Schools in District14
Student Enrollment13,992
Low-Income Students3,504 (25.0%)
English Learners1,973 (14.1%)

Test score trends

2024 - 2026

Reading fell 0.6 points from last year and fell 0.5 points over the full period. Math fell 0.3 points from last year and rose 0.3 points over the full period.

Reading -0.5 percentage pointsTrend down•Math +0.3 percentage pointsTrend up
Changes shown: Reading 2024–2026; Math 2024–2026.

Board Members

nameelectedup for re-election

Yi "Tony" Torng, Ph.D.

President

[email protected]
20222026This year!

Cynthia M. Ruiz

Vice President

[email protected]
20222026This year!

Helen M. Hall

Clerk

[email protected]
20222026This year!

Larry L. Redinger

Member

[email protected]
20242028

Layla Abou-Taleb

Member

[email protected]
20242028

Board website

Expand for details on low-income and english learner performance

Reading Proficiency Scores

Comparison of low-income and English learner groups using district-level CAASPP proficiency data.

Low-Income vs Non-Low-Income

Low-income students trail other students by 14.0 points in reading. It widened over the period shown.

Low-Income
Non-Low-Income
Low-Income -3.8 percentage pointsTrend down•
Non-Low-Income +0.4 percentage pointsTrend up

English Learners vs English Native

22.8% of English learners meet the reading standard, compared with 76.0% of English-only students. The gap widened as English-learner results fell and English-only results rose.

English Learners
English Native
English Learners -3.2 percentage pointsTrend down•
English Native +1.8 percentage pointsTrend up

Math Proficiency Scores

Comparison of low-income and English learner groups using district-level CAASPP proficiency data.

Low-Income vs Non-Low-Income

Low-income students trail other students by 10.4 points in math. It widened slightly over the period shown.

Low-Income
Non-Low-Income
Low-Income -0.8 percentage pointsTrend down•
Non-Low-Income +0.5 percentage pointsTrend up

English Learners vs English Native

46.1% of English learners meet the math standard, compared with 65.3% of English-only students. The gap narrowed as English-learner results rose and English-only results rose.

English Learners
English Native
English Learners +1.4 percentage pointsTrend up•
English Native +0.3 percentage pointsTrend up

District School Map

Schools in this district, color-coded by reading proficiency.

Loading district map...

Hover over a school marker to see details

Schools

Castle Rock Elementary

2975 Castle Rock Road, Diamond Bar, 91765-3420

School Detail
66.0% — Castle Rock ElementaryTrend down-1.7% — Castle Rock Elementary67.8% — Castle Rock ElementaryTrend up+0.2% — Castle Rock Elementary

Chaparral Middle

1405 South Spruce Tree Drive, Diamond Bar, 91765-2571

School Detail
81.4% — Chaparral MiddleTrend down-1.0% — Chaparral Middle81.0% — Chaparral MiddleTrend up+1.7% — Chaparral Middle

Collegewood Elementary

20725 East Collegewood Drive, Walnut Valley, 91789-1118

School Detail
68.0% — Collegewood ElementaryTrend up+5.9% — Collegewood Elementary64.1% — Collegewood ElementaryTrend up+3.4% — Collegewood Elementary

Cyrus J. Morris Elementary

19875 East Calle Baja, Walnut, 91789-2246

School Detail
67.1% — Cyrus J. Morris ElementaryTrend down-2.6% — Cyrus J. Morris Elementary68.7% — Cyrus J. Morris ElementaryTrend down-1.5% — Cyrus J. Morris Elementary

Diamond Bar High

21400 Pathfinder Road, Diamond Bar, 91765-2747

School Detail
78.2% — Diamond Bar HighTrend up+0.2% — Diamond Bar High67.8% — Diamond Bar HighTrend up+1.1% — Diamond Bar High

Evergreen Elementary

2450 Evergreen Springs Drive, Diamond Bar, 91765-3566

School Detail
69.0% — Evergreen ElementaryTrend down-7.4% — Evergreen Elementary68.0% — Evergreen ElementaryTrend down-6.6% — Evergreen Elementary

Leonard G. Westhoff Elementary

20151 Amar Road, Walnut, 91789-1245

School Detail
81.0% — Leonard G. Westhoff ElementaryTrend up+4.7% — Leonard G. Westhoff Elementary81.4% — Leonard G. Westhoff ElementaryTrend up+5.3% — Leonard G. Westhoff Elementary

Maple Hill Elementary

1350 Maple Hill Road, Diamond Bar, 91765-2436

School Detail
82.1% — Maple Hill ElementaryTrend down-2.0% — Maple Hill Elementary79.9% — Maple Hill ElementaryTrend down-3.3% — Maple Hill Elementary

Quail Summit Elementary

23330 East Quail Summit Drive, Diamond Bar, 91765-3031

School Detail
74.8% — Quail Summit ElementaryTrend down-6.5% — Quail Summit Elementary80.7% — Quail Summit ElementaryTrend down-2.0% — Quail Summit Elementary

South Pointe Middle

20671 Larkstone Drive, Walnut, 91789-3863

School Detail
78.9% — South Pointe MiddleTrend up+1.2% — South Pointe Middle80.1% — South Pointe MiddleTrend up+3.0% — South Pointe Middle

Suzanne Middle

525 Suzanne Road, Walnut, 91789-1938

School Detail
74.1% — Suzanne MiddleTrend up+2.0% — Suzanne Middle64.7% — Suzanne MiddleTrend up+0.2% — Suzanne Middle

Vejar Elementary

20222 Vejar Road, Walnut, 91789-2334

School Detail
57.5% — Vejar ElementaryTrend down-9.1% — Vejar Elementary59.0% — Vejar ElementaryTrend down-11.7% — Vejar Elementary

Walnut Elementary

841 South Glenwick, Walnut, 91789-3108

School Detail
72.1% — Walnut ElementaryTrend down-5.7% — Walnut Elementary78.3% — Walnut ElementaryTrend down-0.5% — Walnut Elementary

Walnut High

400 North Pierre Road, Walnut, 91789-2535

School Detail
80.4% — Walnut HighTrend up+2.2% — Walnut High61.9% — Walnut HighTrend up+0.6% — Walnut High

Understanding this district

How does Walnut Valley Unified rank in California?

Walnut Valley Unified ranks No. 62 of 977 in reading and No. 50 of 977 in math for 2026. These proficiency rankings compare districts across all district types.

How much do results vary between Walnut Valley Unified’s schools?

Among the 9 schools serving K–5, proficiency ranges from 57.5% to 82.1% in reading and 59.0% to 81.4% in math.

See the district’s schools

Are results improving across Walnut Valley Unified’s schools?

Over 2024–2026, reading proficiency rose at 6 of 14 schools with results covering that full period; math rose at 8 of 14.

Compare school trends

How do low-income students in Walnut Valley Unified compare with other districts?

Low-income reading proficiency is 65.3%, compared with 35.1% at a typical California unified district. In math, it is 64.9%, compared with 23.6%.

See student-group results

Which districts should I compare with Walnut Valley Unified?

Unified districts in Los Angeles County. Peers have the closest enrollment sizes.

2026 proficiency
DistrictMathReading
Walnut Valley UnifiedThis district72.5%75.5%
Burbank Unified48.0%57.2%
Alhambra Unified55.1%64.4%
Compare these districts
How we compare low-income results

“Typical” is the median across 339 California unified districts with 2026 results, a reported low-income population, and at least 20 low-income tested students in each subject. Each district counts once. This compares proficiency for low-income students, rather than the gap between income groups.