For the 2026-27 school year, there are 4 public schools serving 345 students in Castlewood, SD.
The top-ranked public schools in Castlewood, SD are Castlewood Elementary - 02, Claremont Colony Elementary - 04 and Castlewood High School - 01. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Castlewood, SD public schools have an average math proficiency score of 52% (versus the South Dakota public school average of 43%), and reading proficiency score of 52% (versus the 51% statewide average). Schools in Castlewood have an average ranking of 7/10, which is in the top 50% of South Dakota public schools.
Minority enrollment is 8% of the student body (majority Hispanic), which is less than the South Dakota public school average of 34% (majority American Indian).
Best Public Schools in Castlewood, SD (2026-27)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Castlewood Elementary - 02
(Math: 60-64% | Reading: 50-54%)
Rank:
Rank:
8/
Top 30%10
310 E Harry St
Castlewood, SD 57223
(605) 793-2497
Castlewood, SD 57223
(605) 793-2497
Gr: PK-5 | 140 students Student-teacher ratio: 13:1 Minority enrollment: 6%
Rank: #22.
Claremont Colony Elementary - 04
(Math: <50% | Reading: <50%)
Rank:
Rank:
6/
Top 50%10
46271 184th St
Castlewood, SD 57223
(605) 793-2497
Castlewood, SD 57223
(605) 793-2497
Gr: K-8 | 17 students Student-teacher ratio: 17:1
Rank: #33.
Castlewood High School - 01
(Math: 40-59% | Reading: ≥50%)
Rank:
Rank:
5/
Bottom 50%10
310 E Harry St
Castlewood, SD 57223
(605) 793-2497
Castlewood, SD 57223
(605) 793-2497
Gr: 9-12 | 112 students Student-teacher ratio: 16:1 Minority enrollment: 9%
Rank: #44.
Castlewood Middle School - 03
(Math: 40-44% | Reading: 50-54%)
Rank:
Rank:
5/
Bottom 50%10
310 E Harry St
Castlewood, SD 57223
(605) 793-2497
Castlewood, SD 57223
(605) 793-2497
Gr: 6-8 | 76 students Student-teacher ratio: 19:1 Minority enrollment: 9%
Frequently Asked Questions
What are the top-ranked public schools in Castlewood, SD?
The top-ranked public schools in Castlewood, SD include Castlewood Elementary - 02, Claremont Colony Elementary - 04 and Castlewood High School - 01.
How many public schools are located in Castlewood?
4 public schools are located in Castlewood.
What is the racial composition of students in Castlewood?
Castlewood public schools minority enrollment is 8% of the student body (majority Hispanic), which is less than the South Dakota public schools average of 34% (majority American Indian).
Recent Articles
How Much Choice Do High School Students Have?
Learn how graduation requirements, prerequisites, electives, staffing, scheduling conflicts, AP courses, dual enrollment, and career pathways determine how much control high school students have over schedules each year.
Does Your Child Need More Recess?
Explore whether your child may benefit more from recess than another academic period, including research on attention, learning, physical activity, stress, social development, and school-day balance today.
Combined Grade Classrooms, What Parents Should Know
Learn how combined-grade classrooms work, why public schools use them, potential benefits and challenges, and the questions parents should ask before enrolling their child in one today.