For the 2025 school year, there are 3 public schools serving 215 students in Sully County, SD.
The top ranked public schools in Sully County, SD are Onida Elementary - 04, Sully Buttes Middle School - 06 and Sully Buttes High School - 07. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Sully County, SD public schools have an average math proficiency score of 55% (versus the South Dakota public school average of 43%), and reading proficiency score of 63% (versus the 51% statewide average). Schools in Sully County have an average ranking of 10/10, which is in the top 10% of South Dakota public schools.
Minority enrollment is 16% of the student body (majority American Indian and Hispanic), which is less than the South Dakota public school average of 33% (majority American Indian).
Best Public Schools in Sully County (2025)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Grades
Students
Rank: #11.
Onida Elementary - 04
(Math: 60-69% | Reading: 70-79%)
Rank:
Rank:
10/
Top 5%10
500 8th St
Onida, SD 57564
(605) 258-2617
Onida, SD 57564
(605) 258-2617
Grades: K-5
| 85 students
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
Grades: 6-8
| 58 students
Rank: #33.
Sully Buttes High School - 07
(Math: 21-39% | Reading: 40-59%)
Rank:
Rank:
3/
Bottom 50%10
500 8th St
Onida, SD 57564
(605) 258-2617
Onida, SD 57564
(605) 258-2617
Grades: 9-12
| 72 students
Sully County Public Schools (Closed)
School
Location
Grades
Students
Frequently Asked Questions
What are the top ranked public schools in Sully County, SD?
The top ranked public schools in Sully County, SD include Onida Elementary - 04, Sully Buttes Middle School - 06 and Sully Buttes High School - 07.
How many public schools are located in Sully County?
3 public schools are located in Sully County.
What is the racial composition of students in Sully County?
Sully County public schools minority enrollment is 16% of the student body (majority American Indian and Hispanic), which is less than the South Dakota public schools average of 33% (majority American Indian).
Recent Articles
Understanding Self-Contained Classrooms in Public Schools
Learn about the history of public schools incorporating self-contained classrooms, and whether they are right for your child.
Can Naviance Succeed Improve College and Career Readiness?
Learn about a new student assessment system, Naviance Succeed, which provides tools and support to increase student college and career readiness. A number of school districts are using the tool this year in hopes of improving student performance through more accurate assessment process than are currently available.
Do You Need After School Day Care? Public Schools May Be the Solution
Learn about how your child's public school may be the best source of after school and vacation day care.