Serving 684 students in grades Kindergarten-5, Castle Rock Elementary School ranks in the top 10% of all schools in California for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 69% (which is higher than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 71% (which is higher than the California state average of 47%).
The student-teacher ratio of 26:1 is higher than the California state level of 21:1.
Minority enrollment is 97% of the student body (majority Asian), which is higher than the California state average of 80% (majority Hispanic and Asian).
Quick Facts (26-27)
- Grades: Kindergarten-5
- Enrollment: 684 students
- Student-Teacher Ratio: 26:1
- Minority Enrollment: 97%
- Overall Testing Rank: Top 10% in CA
- Math Proficiency: 69% (Top 10%)
- Reading Proficiency: 71% (Top 20%)
- Science Proficiency: 60-64% (Top 10%)
- Attendance Zone: Castle Rock Elementary serves the southern part of Diamond Bar, CA, covering an area of approximately 8.3 square miles. Most families in the attendance zone can expect a typical drive of 5 to 10 minutes to reach the school, with an average distance of 1.6 miles to the zone's edge and a maximum distance of 3.8 miles.
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Castle Rock Elementary School ranks among the top 20% of public schools in California for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Castle Rock Elementary School's student population of 684 students has stayed relatively flat over five school years.
The teacher population of 26 teachers has stayed relatively flat over five school years.
Grades Offered
Grades Kindergarten-5
Total Students
684 students
Showing 2015–2025. View full 39-year historical data
Total Classroom Teachers
26 teachers
Showing 2014–2025. View full 39-year historical data
School Rankings
Castle Rock Elementary School ranks within the top 10% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Castle Rock Elementary School is 0.47, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#911 out of 9523 schools
(Top 10%)
(Top 10%)
Showing 2011–2023. View full 14-year historical data
Math Test Scores (% Proficient)
69%
34%
Showing 2011–2023. View full 14-year historical data
Reading/Language Arts Test Scores (% Proficient)
71%
47%
Science Test Scores (% Proficient)
60-64%
29%
Student-Teacher Ratio
26:1
21:1
Showing 2014–2025. View full 39-year historical data
Asian
70%
12%
Showing 2015–2025. View full 38-year historical data
Hispanic
19%
56%
Showing 2015–2025. View full 38-year historical data
Black
2%
5%
Showing 2015–2025. View full 38-year historical data
White
3%
20%
Showing 2015–2025. View full 38-year historical data
Hawaiian
1%
n/a
Two or more races
5%
6%
Showing 2015–2025. View full 17-year historical data
All Ethnic Groups
Showing 2015–2025. View full 38-year historical data
Chronically Absent Students
(22-23)13%
27.7%
Eligible for Free Lunch
26%
54%
Showing 2015–2025. View full 34-year historical data
Eligible for Reduced Lunch
1%
8%
Showing 2013–2025. View full 27-year historical data
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Castle Rock Elementary School's ranking?
Castle Rock Elementary School is ranked #911 out of 9,523 schools, which ranks it among the top 10% of public schools in California.
What schools are Castle Rock Elementary School often compared to?
Castle Rock Elementary Schoolis often viewed alongside schools like Evergreen Elementary School, Maple Hill Elementary School, Quail Summit Elementary School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
69% of students have achieved math proficiency (compared to the 34% CA state average), while 71% of students have achieved reading proficiency (compared to the 47% CA state average).
How many students attend Castle Rock Elementary School?
684 students attend Castle Rock Elementary School.
What is the racial composition of the student body?
70% of Castle Rock Elementary School students are Asian, 19% of students are Hispanic, 5% of students are Two or more races, 3% of students are White, 2% of students are Black, and 1% of students are Hawaiian.
What is the student-teacher ratio of Castle Rock Elementary School?
Castle Rock Elementary School has a student ration of 26:1, which is higher than the California state average of 21:1.
What grades does Castle Rock Elementary School offer ?
Castle Rock Elementary School offers enrollment in grades Kindergarten-5
What school district is Castle Rock Elementary School part of?
Castle Rock Elementary School is part of Walnut Valley Unified School District.
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