| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Slinger School District | Slinger | 10/10 Excellent · 97th pct | 3,350 | 5 | PK–12 | 1 |
| Holy Hill Area School District | Richfield | 10/10 Excellent · 90th pct | 483 | 2 | PK–8 | 0 |
| Erin School District | Hartford | 9/10 Excellent · 87th pct | 399 | 1 | PK–8 | 0 |
| Kewaskum School District | Allenton | 9/10 Excellent · 85th pct | 1,789 | 4 | PK–12 | 2 |
| Germantown School District | Colgate | 9/10 Excellent · 83rd pct | 3,903 | 6 | PK–12 | 3 |
| West Bend School District | Jackson | 8/10 Good · 77th pct | 5,736 | 12 | PK–12 | 3 |
| Hartford Joint No. 1 School District | Hartford | 6/10 Average · 57th pct | 1,517 | 3 | PK–8 | 0 |
| Hartford Union High School District | Hartford | 6/10 Average · 50th pct | 1,316 | 1 | 9–12 | 2 |
How Washington County compares
Together they enroll 18,493 students across 34 schools. The largest is West Bend School District with 5,736 students. Districts here average 8.4/10, above the Wisconsin average of 5.6/10. Ratings range from 6/10 to 10/10.
School Districts in Washington County, Wisconsin
Washington County has 8 public school districts covering 11 zip codes. The top-rated district in Washington County is Slinger 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 Washington County, WI?
8 school districts serve zip codes in Washington 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 Washington County, WI?
Of the districts serving Washington County, Slinger School District has the highest rating on this site at 10/10. That places it in the 97th 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.