Districts in Jefferson County10 districts, sorted by rating
| District | City | Rating | Zip Codes |
|---|---|---|---|
| La Fargeville Central School District | La Fargeville Central | 9/10 Excellent · 87th pct | 3 |
| Thousand Islands Central School District | Thousand Islands Central | 9/10 Excellent · 80th pct | 4 |
| Sackets Harbor Central School District | Sackets Harbor Central | 7/10 Good · 67th pct | 1 |
| Lyme Central School District | Lyme Central | 7/10 Good · 66th pct | 2 |
| Alexandria Central School District | Alexandria Central | 7/10 Good · 63rd pct | 3 |
| General Brown Central School District | General Brown Central | 6/10 Average · 57th pct | 3 |
| Indian River Central School District | Indian River Central | 5/10 Average · 47th pct | 6 |
| Belleville Henderson Central School District | Belleville Henderson Central | 5/10 Average · 43rd pct | 4 |
| Carthage Central School District | Carthage Central | 4/10 Below Average · 32nd pct | 7 |
| South Jefferson Central School District | South Jefferson Central | 3/10 Below Average · 30th pct | 6 |
Zip Codes in Jefferson County
School Districts in Jefferson County, New York
Jefferson County has 10 public school districts covering 39 zip codes. The top-rated district in Jefferson County is La Fargeville Central School District (9/10). Ratings are based on the share of students proficient in reading and math on state assessments (New York State tests 2023–24 for most districts), ranked against all districts in New York. 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.