It seems Bradley Central, Cleveland and Walker Valley all compete for kids coming out of Cleveland Middle School, Ocee Middle school and Lake Forrest. There my be another middle school involved as well. Correct me if I am wrong but it seems that the feeder school is hard to define in this case.
Scenerio-- head football coach at Cleveland HS goes to Lake Forrest and talks to kids about Cleveland football. (when practice starts, summer workouts and stuff like that) I am sure there are other systems that have similar problems. (not saying the Clev football coach does this, just using it as an example)