You say flying SCHOOLS but not clear whether you really want training or simple hire.
If it's training, the CAA stated recently that there are only 3 JAR PPL approved places in the USA/Florida which are:
Ormond Beach Aviation, Orlando Flight Training & European Flyers
All 3 have a Brit. conection and, if you just want an hour-building or hire package, they may assist but there are hundreds of American schools and hirers in Florida-many are clearly cowboys.
I am not recommending any of the above named schools but, unlike the rest, all 3 have been recently inspected and approved by the CAA