18
River Trails School District 26
- River Trails Learning Center at Parkview Calendar
- Euclid Elementary School Calendar
- Indian Grove Elementary School Calendar
- River Trails Middle School Calendar
Other districts in Illinois state
- Roxana Community Unit School District 1
- Rockford School District 205
- Round Lake Community Unit School District 116
- Reed Custer Community Unit School District 255u
- Rhodes School District 84-5
- Ridgewood Chsd 234 School District
- Richmond-Burton Chsd 157 School District
- Ridgeland School District 122
- River Bend Community Unit School District 2
- River Grove School District 85-5
- Riverside School District 96
- Rochelle Central Consolidated School District 231
- Rochester Community Unit School District 3a
- Rockdale School District 84
- Rock Island Regional Office Of Education
- Rockton School District 140
- Rockridge Community Unit School District 300
- Roselle School District 12
- Reavis Twp Hsd 220 School District
- Region 05 North Cook Intermediate Service Center 1
- Region 06 West Cook Intermediate Service Center 2
- R O W V A Community Unit School District 208
- Rantoul City School District 137
- Rantoul Township Hsd 193 School District
- Ramsey Community Unit School District 204