Most of the prep schools are still taking applications due to the fact that their future prep students are still in limbo waiting to find out if they are going to receive an appointment. The prep schools will be receiving applications for a while, some as late as early summer, as those who receive TWEs move forward with their plan B, C and D's. You need to find out where you were weak in your file. Were your SAT's not high enough? Were your grades not in the competitive range? Were you lacking leadership? Find those answers and decide which plan will best help prepare you to be a competitive reapplicant. For many, a good 4 year college/university will be enough. For others, a good prep school preferably one with college classes will offer more assistance to prepare for the academies.