+1. Going to go against the the majority vote here, but just here me out.
I think players deserve more freedom to choose how they want to roleplay on the server, either that be a pet dog, some crazy ninja assassin with a kill count in the 100s or something else, none of which fit into the SchoolRP theme practically but are still very relevant ideas prevalent on this server. It's time SRP embraces it hasn't been much of a SchoolRP in quite a long time now.
I think the idea of a application process is amazing especially given the extensive, unrewarding and bureaucratic college system in order to get the rank, or simply doing the bare minimum in a faction for a few months (something that needs to be discouraged in general. This would be the way to do discourage it effectively..) is too much just to be given a role that says you can be an Adult. You shouldn't need to work so hard to have a bit more freedom on this server. As for possible biases you think I may have, I want to just state it that I have two active adult accounts, a college and a Grade-12, there isn't a bias to be found, I just think players deserve more choice & freedom. It REALLY shouldn't take at bare minimum 3 months (if your taking the join-and-leave-a-faction route), or at bare minimum 6 months (if your taking the college exams route.)
Going to receive backlash with this one, but I stand firm by it, it isn't exactly an out of the box concept that fun should be made to be had.