Best Sully County Public Middle Schools (2026)

For the 2026 school year, there is 1 public middle school serving 58 students in Sully County, SD.

The top-ranked public middle school in Sully County, SD is Sully Buttes Middle School - 06. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Sully County, SD public middle school have an score of 55% (versus the South Dakota public middle school average of 39%), and score of 55% (versus the 49% statewide average). Middle schools in Sully County have an average ranking of 9/10, which is in the top 20% of South Dakota public middle schools.

Minority enrollment is 16% of the student body (majority American Indian), which is less than the South Dakota public middle school average of 42% (majority American Indian).

Best Public Middle Schools in Sully County (2026)

School
(Math and Reading Proficiency)

Location

Quick Facts

Rank: #11.

Sully Buttes Middle School - 06

(Math: 50-59% | Reading: 50-59%)
:

Top 30%

500 8th St
Onida, SD 57564
(605) 258-2618

Gr: 6-8 | 58 students Student-teacher ratio: 10:1 Minority enrollment: 15%

[+] Show Closed Public Schools in Sully County, SD

Sully County Public Schools (Closed)

School

Location

Quick Facts

Agar Elementary School (Closed 2005)

Po Box 40
Agar, SD 57520
(605) 258-2180

Gr: K-8 | 2 students

Agar Hi School (Closed 2005)

Po Box 40
Agar, SD 57520
(605) 258-2180

Gr: 9-12 | 4 students

Frequently Asked Questions

What are the top-ranked public middle schools in Sully County, SD?

The top-ranked public middle schools in Sully County, SD include Sully Buttes Middle School - 06.

How many public middle schools are located in Sully County?

1 public middle schools are located in Sully County.

What is the racial composition of students in Sully County?

Sully County public middle schools minority enrollment is 16% of the student body (majority American Indian), which is less than the South Dakota public middle schools average of 42% (majority American Indian).