As successful as Riverdale has been, means they have been under TSSAA scrutiny as well as scrutiny by everyone else. Although the TSSAA does not seek out rule breakers they will look into those that have been called to their attention, so I doubt that Riverdale is as shady as you tend to think. Large metro schools tend to have a great deal of athletes and like any program that starts to have success people will move to that area to get their kids in there especially if colleges have recuited athletes form that school in the past.
PS Colleges don't pay high school coaches to get HS athletes any more, it is too risky and too hard to hide the money trail. Those that have were either lucky or realized it hasn't panned out.
You might want to rethink your allegations unless you have real proof and no offense but Coach T is not always the best source for facts.
As far as Coach Thompson goes, IF he runs a shady program he will eventually get caught. IF people have PROOF of illegal activity then it needs to be brought to the attention of the school and the TSSAA.