James Bicknell Castle High School, more commonly James B. Castle High School or simply Castle High School, is a public high school located in Kāneʻohe CDP, City and County of Honolulu, Hawaiʻi. The school serves grades 9 through 12 and has an enrollment of around 1150 students.
Serving 1,036 students in grades 9-12, Castle High School ranks in the bottom 50% of all schools in Hawaii for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 19% (which is lower than the Hawaii state average of 39%). The percentage of students achieving proficiency in reading/language arts is 69% (which is higher than the Hawaii state average of 52%).
The student-teacher ratio of 12:1 is lower than the Hawaii state level of 14:1.
Minority enrollment is 93% of the student body (majority Hispanic), which is higher than the Hawaii state average of 89% (majority Asian).
Quick Facts (2025-26)
- Grades: 9-12
- Enrollment: 1,036 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 93%
- Graduation Rate: 78% (Btm 50% in HI)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 19% (Btm 50%)
- Reading Proficiency: 69% (Top 20%)
- Science Proficiency: 38% (Top 50%)
- Source: National Center for Education Statistics (NCES), HI Dept. of Education
Top Rankings
Castle High School ranks among the top 20% of public schools in Hawaii for:
Category
Attribute
Reading/Language Arts Proficiency
School Overview
Castle High School's student population of 1,036 students has declined by 8% over five school years.
The teacher population of 83 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
1,036 students
Gender %
Total Classroom Teachers
83 teachers
Year Founded
1951
School Calendar
Last Day of School
Sat. May 16, 2026
School Rankings
Castle High School ranks within the bottom 50% of all 292 schools in Hawaii (based off of combined math and reading proficiency testing data).
The diversity score of Castle High School is 0.76, which is less than the diversity score at state average of 0.80. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#153 out of 292 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
19%
39%
Reading/Language Arts Test Scores (% Proficient)
69%
52%
Science Test Scores (% Proficient)
38%
40%
Student-Teacher Ratio
12:1
14:1
American Indian
n/a
n/a
Asian
15%
24%
Hispanic
21%
19%
Black
n/a
1%
White
7%
11%
Hawaiian
36%
25%
Two or more races
21%
20%
All Ethnic Groups
Graduation Rate
78%
86%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
37%
37%
Eligible for Reduced Lunch
9%
9%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), HI Dept. of Education
School Notes
- School Mascot: Knight
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Castle High School's ranking?
Castle High School is ranked #153 out of 292 schools, which ranks it among the bottom 50% of public schools in Hawaii.
What schools are Castle High School often compared to?
Castle High Schoolis often viewed alongside schools like Kalaheo High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
19% of students have achieved math proficiency (compared to the 39% HI state average), while 69% of students have achieved reading proficiency (compared to the 52% HI state average).
What is the graduation rate of Castle High School?
The graduation rate of Castle High School is 78%, which is lower than the Hawaii state average of 86%.
How many students attend Castle High School?
1,036 students attend Castle High School.
What is the racial composition of the student body?
36% of Castle High School students are Hawaiian, 21% of students are Hispanic, 21% of students are Two or more races, 15% of students are Asian, and 7% of students are White.
What is the student-teacher ratio of Castle High School?
Castle High School has a student ration of 12:1, which is lower than the Hawaii state average of 14:1.
What grades does Castle High School offer ?
Castle High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Castle High School part of?
Castle High School is part of Hawaii Department Of Education School District.
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