Average
#4408 of 9,539 schools in CA
Top 46% in state
Castle Rock Elementary
Elementary School · Walnut Valley Unified · Diamond Bar, CA
A Walnut Valley Unified elementary school where students score 9 points above what's typical for similar communities.
2975 Castle Rock Rd., Diamond Bar, CA 91765
- Math 68% vs CA 39% (2024)
- Reading 68% vs CA 45% (2024)
- 26.6:1 student-teacher ratio
Academics
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Students at Castle Rock Elementary score 68% proficient, which is above what's typical for similar communities (expected: 59%).
2024 CAASPP proficiency
Most recent published year. School vs. CA average.
Trend
→ SteadyProficiency is down 16 points across the 16-year record (2009–2024) and has held near 68% recently.
Show all 12 years
Multi-year averages used by the rating model: math 76% (multi-year average, 2009-2024) · reading/ELA 73% (multi-year average, 2009-2024)
Based on 30 test records from CA state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
27.5%
Students qualifying for federal meal assistance
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateThe neighborhood
Where Castle Rock Elementary sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries. Open the Los Angeles map →
Getting around & local context
- Walk 63Somewhat Walkable
- Bike 32Somewhat Bikeable
- City Safety: High1,946/100K
Powered by
FBI Uniform Crime Reporting · 2024 · city context (Diamond Bar), not school-level safety or attendance eligibility. Source details
Source period: 2024. Freshness not available.
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$104,737
Median home value
$878,900
Median rent
$2,395/mo
College educated
53.3%
Homeownership
77.2%
Poverty rate
10.1%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 91765; this is area context, not an attendance boundary.
Compare nearby
Nearby same-level schools
4 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Kingdom Seed AcademyPrivate · tuition | Not rated | K–6 | 0.6 mi | 18 | Compare → |
| Evergreen ElementaryEnrollment path unverified | 7.3 | K–5 | 0.7 mi | 717 | Compare → |
| Tzu Chi Elementary SatoaPrivate · tuition | 6.1private | PK–5 | 1.6 mi | 65 | Compare → |
| Tzu Chi Elementary SchoolPrivate · tuition | 5.8private | K–5 | 1.6 mi | 88 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Public and private scores come from different models and are shown side by side, not blended into one ranking.
Walnut Valley Unified
- Schools in district
- 15
- Rank in district
- #14 of 15
- District spending per student
- $13,971NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 10.1%Census SAIPE · 2024
Castle Rock Elementary is listed in Walnut Valley Unified; a district label does not verify attendance for an address.
About Castle Rock Elementary
Castle Rock Elementary is a public elementary school in Diamond Bar, CA, part of Walnut Valley Unified, serving approximately 691 students in grades Kindergarten-5th with a 26.6:1 student-teacher ratio. It holds a MySchoolScout rating of 6.6 out of 10 and ranks #4,408 of 9,539 schools in CA. State assessment records show 76% math proficiency (multi-year average, 2009-2024) and 73% reading/ELA proficiency (multi-year average, 2009-2024).
Frequently asked questions
Common questions about Castle Rock Elementary
What grades does Castle Rock Elementary serve?
Castle Rock Elementary serves students in grades Kindergarten through 5th.
How many students attend Castle Rock Elementary?
Castle Rock Elementary has an enrollment of approximately 691 students.
What is the student-teacher ratio at Castle Rock Elementary?
The student-teacher ratio at Castle Rock Elementary is 26.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Castle Rock Elementary rank in CA?
Castle Rock Elementary ranks #4,408 of 9,539 schools in CA.
What is Castle Rock Elementary's MySchoolScout rating?
Castle Rock Elementary has a current MySchoolScout rating of 6.6 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Castle Rock Elementary?
Based on loaded state assessment records, Castle Rock Elementary has 76% math proficiency (multi-year average, 2009-2024) and 73% reading/ELA proficiency (multi-year average, 2009-2024).
Is Castle Rock Elementary a charter school?
No, Castle Rock Elementary is not a charter school. It is a traditional public school operated by the local school district.
Is Castle Rock Elementary a Title I school?
No, Castle Rock Elementary is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Castle Rock Elementary?
27.5% of students at Castle Rock Elementary qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- Kindergarten – 5th
- Enrollment
- 691
- Student-Teacher Ratio
- 26.6:1
- Teachers (FTE)
- 26
- Type
- regular
- Setting
- Large Suburb
- County
- Los Angeles County
- Chronic Absenteeism (SY 2022-23)
- 12.9%
- Phone
- (909) 598-5006
- Area population (ZIP 91765)
- 44,779
- Area average commute
- 34 min
- Area median age
- 45.7
Official sources & links
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2024 CAASPP · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2024 CAASPP. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2024 CAASPP · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2024 CAASPP. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 91765; this does not measure the attendance area.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2024; directory SY 2023–24
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