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- Rattan Public Schools, Rattan, Pushmataha County
- Ravia Public School, Ravia, Johnston County
- Red Oak Public Schools, Red Oak, Latimer County
- Reydon Public Schools, Reydon, Roger Mills County
- Ringling Public Schools, Ringling, Jefferson County
- Ringwood Public Schools, Ringwood, Major County
- Ripley Public Schools, Ripley, Payne County
- Riverside Public Schools, El Reno, Canadian County
- Robin Hill Public School, Norman, Cleveland County
- Rock Creek Public Schools, Bokchito, Bryan County
- Rocky Mountain Public School, Stilwell, Adair County
- Roff Public Schools, Roff, Pontotoc County
- Roland Public Schools, Roland, Sequoyah County
- Rush Springs Public Schools, Rush Springs, Grady County
- Ryal Public School, Henryetta, McIntosh County
- Ryan Public Schools, Ryan, Jefferson County
Read more about this topic: List Of School Districts In Oklahoma