| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Oconomowoc Area School District | Ixonia | 10/10 Excellent · 91st pct | 5,015 | 8 | PK–12 | 1 |
| Fort Atkinson School District | Fort Atkinson | 8/10 Good · 78th pct | 2,523 | 7 | PK–12 | 1 |
| Lake Mills Area School District | Lake Mills | 7/10 Good · 69th pct | 1,511 | 3 | PK–12 | 1 |
| Cambridge School District | Cambridge | 6/10 Average · 57th pct | 915 | 4 | PK–12 | 1 |
| Jefferson School District | Helenville | 6/10 Average · 54th pct | 1,731 | 5 | PK–12 | 3 |
| Palmyra-Eagle Area School District | Palmyra | 4/10 Below Average · 38th pct | 574 | 3 | PK–12 | 1 |
| Johnson Creek School District | Johnson Creek | 4/10 Below Average · 35th pct | 605 | 1 | PK–12 | 1 |
| Watertown School District | Watertown | 4/10 Below Average · 31st pct | 3,202 | 10 | PK–12 | 1 |
| Waterloo School District | Waterloo | 2/10 Poor · 17th pct | 768 | 4 | PK–12 | 1 |
How Jefferson County compares
Together they enroll 16,844 students across 45 schools. The largest is Oconomowoc Area School District with 5,015 students. Districts here average 5.7/10, above the Wisconsin average of 5.6/10. Ratings range from 2/10 to 10/10.
School Districts in Jefferson County, Wisconsin
Jefferson County has 9 public school districts covering 11 zip codes. The top-rated district in Jefferson County is Oconomowoc Area School District (10/10). Ratings are based on the share of students proficient in reading and math on state assessments (Forward Exam 2024–25), ranked against all districts in Wisconsin. 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 Jefferson County, WI?
9 school districts serve zip codes in Jefferson County, WI. 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 Jefferson County, WI?
Of the districts serving Jefferson County, Oconomowoc Area School District has the highest rating on this site at 10/10. That places it in the 91st percentile among Wisconsin school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on Wisconsin reading and math assessments, ranked against other districts in Wisconsin and converted to a 1–10 scale. Percentiles compare districts within Wisconsin only, never across state lines.