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Walnut Valley Unified School District (2026) - Diamond Bar, CA

Walnut Valley Unified School District

880 South Lemon Ave.
Walnut, CA 91789-2931
(District boundaries shown in map)
10/
10
Top 5%

Top Rankings

Walnut Valley Unified School District ranks among the top 20% of public school district in California for:

Category
Attribute
Overall Rank
Highest overall rank (Top 5%)
Math Proficiency
Highest math proficiency (Top 5%)
Reading/Language Arts Proficiency
Highest reading/language arts proficiency (Top 5%)
Science Proficiency
Highest science proficiency (Top 5%)
Graduation Rate
Highest graduation rate (Top 5%)
Community Size
Largest student body (number of students) (Top 1%)
For the 2026 school year, there are 15 public schools serving 13,992 students in Walnut Valley Unified School District. This district's average testing ranking is 10/10, which is in the top 5% of public schools in California.
Public Schools in Walnut Valley Unified School District have an average math proficiency score of 71% (versus the California public school average of 34%), and reading proficiency score of 76% (versus the 47% statewide average).
The top-ranked public schools in Walnut Valley Unified School District are Maple Hill Elementary School, Quail Summit Elementary School and Leonard G. Westhoff Elementary School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking. Walnut Valley Unified School District has one of the highest concentrations of top-ranked public schools in California.
Minority enrollment is 97% of the student body (majority Asian), which is more than the California public school average of 80% (majority Hispanic).

Overview

This School District
This State (CA)
# Schools
15 Schools
10,347 Schools
# Students
13,992 Students
5,790,405 Students
# Teachers
554 Teachers
267,593 Teachers
Student-Teacher Ratio
25:1
25:1

Student By Grade

District Rank

Walnut Valley Unified School District, which is ranked #59 of all 1,904 school districts in California (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 97% has decreased from 98% over five school years.
This School District
State Average (CA)
#62 out of 1932 school districts
(Top 5%)
71%
34%
76%
47%
57%
29%
97%
87%

Students by Ethnicity:

0.47
0.63
% American Indian
n/a
1%
% Asian
70%
12%
% Hispanic
21%
56%
% Black
1%
5%
% White
4%
20%
% Hawaiian
n/a
n/a
% Two or more races
4%
6%
All Ethnic Groups

District Revenue and Spending

The revenue/student of $14,210 in this school district is less than the state median of $20,100. The school district revenue/student has grown by 9% over four school years.
The school district's spending/student of $14,506 is less than the state median of $18,511. The school district spending/student has grown by 10% over four school years.
This School District
This State (CA)
Total Revenue
$199 MM
$116,387 MM
Spending
$203 MM
$107,188 MM
Revenue / Student
$14,210
$20,100
Spending / Student
$14,506
$18,511

Best Walnut Valley Unified School District Public Schools (2026)

School
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Maple Hill Elementary School
(Math: 86% | Reading: 82%)
Rank:
10/
10
Top 5%
1350 Maple Hill Rd.
Diamond Bar, CA 91765
(909) 861-6224
Gr: K-5 | 556 students Student-teacher ratio: 26:1 Minority enrollment: 97%
Rank: #22.
Quail Summit Elementary School
(Math: 83% | Reading: 79%)
Rank:
10/
10
Top 5%
23330 East Quail Summit Dr.
Diamond Bar, CA 91765
(909) 861-3004
Gr: K-5 | 696 students Student-teacher ratio: 25:1 Minority enrollment: 97%
Rank: #33.
Leonard G. Westhoff Elementary School
(Math: 81% | Reading: 77%)
Rank:
10/
10
Top 5%
1323 Country Hollow
Walnut, CA 91789
(909) 594-6483
Gr: K-5 | 654 students Student-teacher ratio: 26:1 Minority enrollment: 96%
Rank: #44.
Walnut Elementary School
(Math: 78% | Reading: 77%)
Rank:
10/
10
Top 5%
841 South Glenwick
Walnut, CA 91789
(909) 594-1820
Gr: K-5 | 706 students Student-teacher ratio: 26:1 Minority enrollment: 99%
Rank: #55.
Chaparral Middle School
(Math: 74% | Reading: 80%)
Rank:
10/
10
Top 5%
1405 South Spruce Tree Dr.
Diamond Bar, CA 91765
(909) 861-6227
Gr: 6-8 | 1,349 students Student-teacher ratio: 28:1 Minority enrollment: 96%
Rank: #66.
South Pointe Middle School
(Math: 75% | Reading: 78%)
Rank:
10/
10
Top 5%
20671 Larkstone Dr.
Walnut, CA 91789
(909) 595-8171
Gr: 6-8 | 979 students Student-teacher ratio: 26:1 Minority enrollment: 98%
Rank: #77.
Diamond Bar High School
(Math: 68% | Reading: 78%)
Rank:
10/
10
Top 10%
21400 Pathfinder Rd.
Diamond Bar, CA 91765
(909) 594-1405
Gr: 9-12 | 2,563 students Student-teacher ratio: 26:1 Minority enrollment: 95%
Rank: #88.
Evergreen Elementary School
(Math: 69% | Reading: 74%)
Rank:
10/
10
Top 10%
2450 South Evergreen Springs
Diamond Bar, CA 91765
(909) 594-1041
Gr: K-5 | 709 students Student-teacher ratio: 25:1 Minority enrollment: 97%
Rank: #99.
Walnut High School
(Math: 61% | Reading: 80%)
Rank:
10/
10
Top 10%
400 North Pierre Rd.
Walnut, CA 91789
(909) 594-1333
Gr: 9-12 | 2,148 students Student-teacher ratio: 23:1 Minority enrollment: 96%
Rank: #1010.
Castle Rock Elementary School
(Math: 69% | Reading: 71%)
Rank:
10/
10
Top 10%
2975 Castle Rock Rd.
Diamond Bar, CA 91765
(909) 598-5006
Gr: K-5 | 684 students Student-teacher ratio: 26:1 Minority enrollment: 97%
Rank: #11 - 1211. - 12.
Collegewood Elementary School
(Math: 67% | Reading: 70%)
Rank:
9/
10
Top 20%
20725 East Collegewood Dr.
Walnut, CA 91789
(909) 598-5308
Gr: K-5 | 606 students Student-teacher ratio: 25:1 Minority enrollment: 97%
Rank: #11 - 1211. - 12.
Cyrus J. Morris Elementary School
(Math: 67% | Reading: 70%)
Rank:
9/
10
Top 20%
19875 East Calle Baja
Walnut, CA 91789
(909) 594-0053
Gr: K-5 | 485 students Student-teacher ratio: 27:1 Minority enrollment: 98%
Rank: #1313.
Suzanne Middle School
(Math: 62% | Reading: 72%)
Rank:
9/
10
Top 20%
525 Suzanne Rd.
Walnut, CA 91789
(909) 594-1657
Gr: 6-8 | 1,190 students Student-teacher ratio: 26:1 Minority enrollment: 96%
Rank: #1414.
Vejar Elementary School
(Math: 61% | Reading: 65%)
Rank:
9/
10
Top 20%
20222 Vejar Rd.
Walnut, CA 91789
(909) 594-1434
Gr: K-5 | 631 students Student-teacher ratio: 23:1 Minority enrollment: 96%
Rank: #1515.
Ron Hockwalt Academies (Continuation School)
Alternative School
(Math: <50% | Reading: 21-39%)
Rank:
6/
10
Top 50%
476 South Lemon Ave.
Walnut, CA 91789
(909) 594-0776
Gr: 9-12 | 36 students Student-teacher ratio: 5:1 Minority enrollment: 85%

Frequently Asked Questions

How many schools belong to Walnut Valley Unified School District?
Walnut Valley Unified School District manages 15 public schools serving 13,992 students.
What is the rank of Walnut Valley Unified School District?
Walnut Valley Unified School District is ranked #59 out of 1,904 school districts in California (top 5%) based off of combined math and reading proficiency testing data for the 2022-2023 school year. This district ranks in the top 20% of California school districts for: Highest overall rank (Top 5%), Highest math proficiency (Top 5%), Highest reading/language arts proficiency (Top 5%), Highest science proficiency (Top 5%), Highest graduation rate (Top 5%) and Largest student body (number of students) (Top 1%)
What is the racial composition of students in Walnut Valley Unified School District?
70% of Walnut Valley Unified School District students are Asian, 21% of students are Hispanic, 4% of students are White, 4% of students are Two or more races, and 1% of students are Black.
What is the student/teacher ratio of Walnut Valley Unified School District?
Walnut Valley Unified School District has a student/teacher ratio of 25:1, which is higher than the California state average of 22:1.
What is Walnut Valley Unified School District's spending/student ratio?
The school district's spending/student of $14,506 is less than the state median of $18,511. The school district spending/student has grown by 10% over four school years.

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Quick Facts (2026)

  • District size: 15 schools
  • Grades: K-12
  • Enrollment: 13,992 students
  • Student-Teacher Ratio: 25:1
  • Minority Enrollment: 97%
  • : 97% (Top 5% in CA)
  • : Top 5%
  • : 71% (Top 5%)
  • : 76% (Top 5%)
  • : 57% (Top 5%)
  • Source: National Center for Education Statistics (NCES), CA Dept. of Education

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