Ya know, like Star Trek Academy.
Of course, this could go in different directions. I've thought about a more battle academy direction.
Pathways would be something like:
-> Close-Up Combat
-> Gun Specialist
-> Ship Expert
-> Weapon Expert
It would in fact be a space discovery school and positions would also include more advanced science and tech positions, and spy would be changed to scout.
Either way, the RP could go on past the academy. Either into the battle or having the graduating students explore new worlds.