This will be the area for the 4th and final combat trainer. Graduation from the combat school will require some further effort on your part. There are a series of rooms starting to the east where players will need to kill each creature in order to allow advancement to 40 aim and dodge and 40 healthmax.
There will be life after 40, but not in school. Opportunities for advancement will eventually be placed in the wilds of COW.
Feel free to try your hand at the creatures, but there won't be an actual advancement until Thorn codes the final creature in this room.