| Name |
County |
| Resurrection High School |
Cook County |
| Rich Central High School |
Cook County |
| Rich East High School |
Cook County |
| Rich South High School |
Cook County |
| Richard Crane Medical Preparatory High School |
Cook County |
| Richland County High School |
Richland County |
| Richland Junior High School |
Will County |
| Richmond Burton Community High School |
McHenry County |
| Richwoods High School |
Peoria County |
| Rickover Naval Academy |
Cook County |
| Ridgeview High School |
McLean County |
| Ridgewood Community High School |
Cook County |
| River Ridge High School |
Jo Daviess County |
| Riverdale High School |
Rock Island County |
| Riverside Brookfield High School |
Cook County |
| Riverton High School |
Sangamon County |
| Roanoke Benson High School |
Woodford County |
| Robert Lindblom Math and Science Academy |
Cook County |
| Roberto Clemente Community Academy |
Cook County |
| Robinson High School |
Crawford County |
| Rochelle Township High School |
Ogle County |
| Rochelle Zell Jewish High School |
Cook County |
| Rochester High School |
Sangamon County |
| Rock Falls High School |
Whiteside County |
| Rock Island High School |
Rock Island County |
| Rockford East High School |
Winnebago County |
| Rockridge High School |
Rock Island County |
| ROE Adult Learning Center |
Macoupin County |
| Rolling Meadows High School |
Cook County |
| Romeoville High School |
Will County |
| Roosevelt Community Education Center |
Winnebago County |
| Rosary High School |
Kane County |
| Round Lake High School |
Lake County |
| Routt Catholic High School |
Morgan County |
| ROWVA High School |
Knox County |
| Roxana Senior High School |
Madison County |
| Rushville - Industry High School |
Schuyler County |
| Sacred Heart - Griffin High School |
Sangamon County |
| Safe School Program Centralia |
Marion County |
| Saint Anne Community High School |
Kankakee County |
| Saint Anthony High School |
Effingham County |
| Saint Benedict Preparatory School |
Cook County |
| Saint Charles East High School |
Kane County |
| Saint Charles North High School |
Kane County |
| Saint Edward Catholic High School |
Kane County |
| Saint Elmo Senior High School |
Fayette County |
| Saint Francis de Sales High School |
Cook County |
| Saint Francis High School |
DuPage County |
| Saint Ignatius College Prep High School |
Cook County |
| Saint Joseph - Ogden High School |
Champaign County |
| Saint Laurence High School |
Cook County |
| Saint Patrick High School |
Cook County |
| Saint Rita of Cascia High School |
Cook County |
| Saint Teresa High School |
Macon County |
| Saint Viator High School |
Cook County |
| Salem Community High School |
Marion County |
| Salt Fork High School |
Vermilion County |
| Sandoval Senior High School |
Marion County |
| Sandwich High School |
DeKalb County |
| Sangamon County Learning Academy |
Sangamon County |
| Sangamon Valley High School |
Macon County |
| Sarah E Goode STEM Academy |
Cook County |
| Scales Mound High School |
Jo Daviess County |
| Schaumburg High School |
Cook County |
| Schurz High School |
Cook County |
| Seneca Township High School |
LaSalle County |
| Senn High School |
Cook County |
| Serena High School |
LaSalle County |
| Sesser Valier High School |
Franklin County |
| Shelbyville High School |
Shelby County |
| Sherrard High School |
Rock Island County |
| Shiloh High School |
Edgar County |
| Simeon Career Academy |
Cook County |
| Somonauk High School |
DeKalb County |
| South Beloit High School |
Winnebago County |
