Best Sully County Public Middle Schools (2025-26)

For the 2025-26 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 (2025-26)

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).