| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Chester School District 39-1 | Chester | 6/10 Average · 56th pct | 576 | 7 | PK–12 | 2 |
| Madison Central School District 39-2 | Madison | 5/10 Average · 40th pct | 1,147 | 3 | K–12 | 2 |
| Oldham-Ramona-Rutland School District 39-6 | Nunda | Not rated | — | — | PK–12 | 3 |
How Lake County compares
Together they enroll 1,723 students across 10 schools. The largest is Madison Central School District 39-2 with 1,147 students. Districts here average 5.5/10, below the South Dakota average of 5.6/10. Ratings range from 5/10 to 6/10. 1 of the 3 districts has no state assessment data and is shown as Not rated.
School Districts in Lake County, South Dakota
Lake County has 3 public school districts covering 7 zip codes. The top-rated district in Lake County is Chester School District 39-1 (6/10). 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 Lake County, SD?
3 school districts serve zip codes in Lake County, SD. This page lists each one with its rating, enrollment, grade span and the zip codes it covers.
What is the best-rated school district in Lake County, SD?
Of the districts serving Lake County, Chester School District 39-1 has the highest rating on this site at 6/10. That places it in the 56th 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.