R
- Ralls County R-II School District
- Raymondville R-VII School District
- Raymore-Peculiar R-II School District web site
- Raytown C-2 School District (Jackson County) web site
- Reeds Spring R-IV School District (Stone County)
- Renick R-V School District
- Republic R-III School District (Greene County)
- Revere C-3 School District
- Rich Hill R-IV School District
- Richards R-V School District
- Richland R-I School District
- Richland R-IV School District (Pulaski County) web site
- Richmond R-XVI School District
- Richwoods R-VII Public School District (Washington County), (Franklin County)
- Ridgeway R-V School District
- Ripley County R-III School District
- Risco R-II School District
- Ritenour School District (St. Louis County) web site
- Riverview Gardens School District (St. Louis County) web site
- Rock Port R-II School District
- Rockwood R-VI School District web site
- Rolla 31 Public Schools (Phelps County) web site
- Roscoe C-1 School District
Read more about this topic: List Of School Districts In Missouri