For the 2026 school year, there are 3 public high schools serving 424 students in Hamlin County, SD.
The top-ranked public high schools in Hamlin County, SD are Castlewood High School - 01, Hamlin High School - 01 and Estelline High School - 01. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Hamlin County, SD public high schools have an average math proficiency score of 42% (versus the South Dakota public high school average of 40%), and reading proficiency score of 51% (versus the 63% statewide average). High schools in Hamlin County have an average ranking of 4/10, which is in the bottom 50% of South Dakota public high schools.
Hamlin County, SD public high school have a Graduation Rate of 81%, which is less than the South Dakota average of 82%.
The school with highest graduation rate is Hamlin High School - 01, with ≥90% graduation rate. Read more about public school graduation rate statistics in South Dakota or national school graduation rate statistics.
Minority enrollment is 10% of the student body (majority Hispanic), which is less than the South Dakota public high school average of 35% (majority American Indian).
Best Public High Schools in Hamlin County (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
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 | 106 students Student-teacher ratio: 15:1 Minority enrollment: 8%
Rank: #22.
Hamlin High School - 01
(Math: 30-39% | Reading: 55-59%)
Rank:
Rank:
5/
Bottom 50%10
44577 188th St
Hayti, SD 57241
(605) 783-3644
Hayti, SD 57241
(605) 783-3644
Gr: 9-12 | 232 students Student-teacher ratio: 13:1 Minority enrollment: 10%
Rank: #33.
Estelline High School - 01
(Math: 40-59% | Reading: 21-39%)
Rank:
Rank:
4/
Bottom 50%10
708 Davis Ave
Estelline, SD 57234
(605) 873-2201
Estelline, SD 57234
(605) 873-2201
Gr: 9-12 | 86 students Student-teacher ratio: 10:1 Minority enrollment: 12%
Hamlin County Public Schools (Closed)
School
Location
Quick Facts
404 6th St N
Estelline, SD 57234
(605) 873-2201
Estelline, SD 57234
(605) 873-2201
Gr: PK-5 | 136 students Student-teacher ratio: 12:1 Minority enrollment: 22%
Ne Ed Services Cooperative - 01 (Closed 2009)
Special Education School
310 5th St
Hayti, SD 57241
(605) 783-3607
Hayti, SD 57241
(605) 783-3607
Gr: K-12
Frequently Asked Questions
What are the top-ranked public high schools in Hamlin County, SD?
The top-ranked public high schools in Hamlin County, SD include Castlewood High School - 01, Hamlin High School - 01 and Estelline High School - 01.
How many public high schools are located in Hamlin County?
3 public high schools are located in Hamlin County.
What is the racial composition of students in Hamlin County?
Hamlin County public high schools minority enrollment is 10% of the student body (majority Hispanic), which is less than the South Dakota public high schools average of 35% (majority American Indian).