| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Agar-Blunt-Onida School District 58-3 | Agar | 9/10 Excellent · 86th pct | 231 | 4 | PK–12 | 2 |
How Sully County compares
It enrolls 231 students across 4 schools. Its rating of 9/10 is above the South Dakota average of 5.6/10.
School Districts in Sully County, South Dakota
Sully County has 1 public school district covering 2 zip codes. The top-rated district in Sully County is Agar-Blunt-Onida School District 58-3 (9/10). Ratings are based on the share of students proficient in reading and math on state assessments (NCES EDFacts, 2021–22 for most districts), ranked against all districts in South Dakota. Directory details come from NCES CCD 2024–25.
Enter your zip code on any page to confirm your exact district assignment — district boundaries are address-specific and may not follow county or city lines.
Frequently Asked Questions
How many school districts are in Sully County, SD?
1 school district serves zip codes in Sully County, SD. The table above shows its rating, enrollment, grade span and the zip codes it covers.
What is the best-rated school district in Sully County, SD?
Of the districts serving Sully County, Agar-Blunt-Onida School District 58-3 has the highest rating on this site at 9/10. That places it in the 86th percentile among South Dakota school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on South Dakota reading and math assessments, ranked against other districts in South Dakota and converted to a 1–10 scale. Percentiles compare districts within South Dakota only, never across state lines.