Serving 106 students in grades 9-12, Castlewood High School - 01 ranks in the bottom 50% of all schools in South Dakota for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 40-59% (which is approximately equal to the South Dakota state average of 42%). The percentage of students achieving proficiency in reading/language arts is ≥50% (which is lower than the South Dakota state average of 51%).
The student-teacher ratio of 15:1 is higher than the South Dakota state level of 12:1.
Minority enrollment is 8% of the student body (majority Hispanic), which is lower than the South Dakota state average of 33% (majority American Indian).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 106 students
- Student-Teacher Ratio: 15:1
- Minority Enrollment: 8%
- Graduation Rate: ≥50% (Btm 50% in SD)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 40-59% (Top 50%)
- Reading Proficiency: ≥50% (Top 50%)
- Science Proficiency: ≥50% (Top 20%)
- Source: National Center for Education Statistics (NCES), SD Dept. of Education
Top Rankings
Castlewood High School - 01 ranks among the top 20% of public schools in South Dakota for:
Category
Attribute
Science Proficiency
School Overview
Castlewood High School - 01's student population of 106 students has grown by 23% over five school years.
The teacher population of 7 teachers has grown by 16% over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
106 students
Gender %
Total Classroom Teachers
7 teachers
School Calendar
School Rankings
Castlewood High School - 01 ranks within the bottom 50% of all 619 schools in South Dakota (based off of combined math and reading proficiency testing data).
The diversity score of Castlewood High School - 01 is 0.15, which is less than the diversity score at state average of 0.53. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#313 out of 619 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
40-59%
42%
Reading/Language Arts Test Scores (% Proficient)
≥50%
51%
Science Test Scores (% Proficient)
≥50%
42%
Student-Teacher Ratio
15:1
12:1
American Indian
n/a
14%
Asian
n/a
2%
Hispanic
6%
8%
Black
n/a
3%
White
92%
67%
Hawaiian
n/a
n/a
Two or more races
2%
6%
All Ethnic Groups
Graduation Rate
≥50%
82%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
9%
31%
Eligible for Reduced Lunch
4%
6%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), SD Dept. of Education
Frequently Asked Questions
What is Castlewood High School - 01's ranking?
Castlewood High School - 01 is ranked #313 out of 619 schools, which ranks it among the bottom 50% of public schools in South Dakota.
What percent of students have achieved state testing proficiency in math and reading?
40-59% of students have achieved math proficiency (compared to the 42% SD state average), while ≥50% of students have achieved reading proficiency (compared to the 51% SD state average).
What is the graduation rate of Castlewood High School - 01?
The graduation rate of Castlewood High School - 01 is 50%, which is lower than the South Dakota state average of 82%.
How many students attend Castlewood High School - 01?
106 students attend Castlewood High School - 01.
What is the racial composition of the student body?
92% of Castlewood High School - 01 students are White, 6% of students are Hispanic, and 2% of students are Two or more races.
What is the student-teacher ratio of Castlewood High School - 01?
Castlewood High School - 01 has a student ration of 15:1, which is higher than the South Dakota state average of 12:1.
What grades does Castlewood High School - 01 offer ?
Castlewood High School - 01 offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Castlewood High School - 01 part of?
Castlewood High School - 01 is part of Castlewood School District 28-1.
School Reviews
Review Castlewood High School - 01. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
Year-Round Schooling in 2026: Updated Parent Guide
Explore the latest 2026 data, trends, costs, and parent planning tips in the ongoing debate over year-round schooling vs the traditional calendar.
No Child Left Behind: Past, Present, and Future of U.S. School Policy
Explore how No Child Left Behind evolved into ESSA, what it means for 2025‑26 schooling, and what parents need to know about testing, admissions planning, and funding.
Understanding Public School Fees & Optional Costs Guide
Discover what public school fees are required versus optional, with 2026 updates for parents, students, and educators on budgeting and planning.
