| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Francis Howell R-III School District | Saint Charles | 10/10 Excellent · 96th pct | 17,124 | 23 | PK–12 | 4 |
| Fort Zumwalt R-II School District | O Fallon | 10/10 Excellent · 92nd pct | 17,060 | 27 | PK–12 | 3 |
| Wentzville R-IV School District | Foristell | 9/10 Excellent · 89th pct | 17,997 | 22 | PK–12 | 3 |
| Orchard Farm R-V School District | Saint Charles | 9/10 Excellent · 86th pct | 2,376 | 5 | PK–12 | 3 |
| St. Charles R-VI School District | ST CHARLES | 9/10 Excellent · 85th pct | 4,836 | 12 | PK–12 | 0 |
| Washington School District | Augusta | 8/10 Good · 74th pct | 3,720 | 11 | PK–12 | 1 |
How St. Charles County compares
Together they enroll 63,113 students across 100 schools. The largest is Wentzville R-IV School District with 17,997 students. Districts here average 9.2/10, above the Missouri average of 5.6/10. Ratings range from 8/10 to 10/10.
School Districts in St. Charles County, Missouri
St. Charles County has 6 public school districts covering 14 zip codes. The top-rated district in St. Charles County is Francis Howell R-III School District (10/10). Ratings are based on the share of students proficient in reading and math on state assessments (MAP 2025), ranked against all districts in Missouri. 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 St. Charles County, MO?
6 school districts serve zip codes in St. Charles County, MO. 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 St. Charles County, MO?
Of the districts serving St. Charles County, Francis Howell R-III School District has the highest rating on this site at 10/10. That places it in the 96th percentile among Missouri school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on Missouri reading and math assessments, ranked against other districts in Missouri and converted to a 1–10 scale. Percentiles compare districts within Missouri only, never across state lines.