For the 2025-26 school year, there are 2 public elementary schools serving 143 students in Sully County, SD.
The top ranked public elementary schools in Sully County, SD are Onida Elementary - 04 and 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 elementary schools have an average math proficiency score of 54% (versus the South Dakota public elementary school average of 43%), and reading proficiency score of 65% (versus the 49% statewide average). Elementary schools in Sully County have an average ranking of 10/10, which is in the top 5% of South Dakota public elementary schools.
Minority enrollment is 15% of the student body (majority Hispanic), which is less than the South Dakota public elementary school average of 36% (majority American Indian).
Best Public Elementary Schools in Sully County (2025-26)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Onida Elementary - 04
(Math: 50-59% | Reading: 70-79%)
Rank:
Rank:
10/
Top 10%10
500 8th St
Onida, SD 57564
(605) 258-2617
Onida, SD 57564
(605) 258-2617
Gr: K-5 | 85 students Student-teacher ratio: 9:1 Minority enrollment: 15%
Rank: #22.
Sully Buttes Middle School - 06
(Math: 50-59% | Reading: 50-59%)
Rank:
Rank:
8/
Top 30%10
500 8th St
Onida, SD 57564
(605) 258-2618
Onida, SD 57564
(605) 258-2618
Gr: 6-8 | 58 students Student-teacher ratio: 10:1 Minority enrollment: 15%
Sully County Public Schools (Closed)
School
Location
Quick Facts
Frequently Asked Questions
What are the top ranked public elementary schools in Sully County, SD?
The top ranked public elementary schools in Sully County, SD include Onida Elementary - 04 and Sully Buttes Middle School - 06.
How many public elementary schools are located in Sully County?
2 public elementary schools are located in Sully County.
What is the racial composition of students in Sully County?
Sully County public elementary schools minority enrollment is 15% of the student body (majority Hispanic), which is less than the South Dakota public elementary schools average of 36% (majority American Indian).
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