Castle Rock Elementary
Public
Elementary Grades K–5
Part of Walnut Valley Unified
2975 Castle Rock Rd., Diamond Bar, CA 91765 · (909) 598-5006
Community ratings
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Academic performanceComing soon
State test scores coming soon
Proficiency and other measures from the CA Department of Education report card, shown against the state average.
At a glance
684Students enrolled
26:1Student–teacher ratio
27%Free / reduced lunch
SuburbSetting
Regular SchoolSchool type
Enrollment by grade
Kindergarten131
Grade 176
Grade 2102
Grade 3101
Grade 4137
Grade 5137
Students
Asian · 70%480
Hispanic · 19%132
Two or more races · 5%37
White · 3%20
Black · 1%10
Native Hawaiian/Pacific Islander · 1%4
American Indian/Alaska Native · 0%1
Counts as reported to NCES; percentages are of students with a reported race/ethnicity.
Enrollment · last 5 years
683’20
663’21
646’22
691’23
684’24
Location
2975 Castle Rock Rd. Diamond Bar
Neighbor reviews
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School facts from the U.S. Department of Education (NCES), 2024-2025 school year. Community ratings and reviews reflect neighbor opinions, not an official measure of school quality.