Re: Dropping out of school, drumming, and mental health (sort of)
I don't know if this will help. But when I'm between playing situations, want to work on stuff, need to pump up some chops before an upcoming gig or just want to play... NOW - I play with CDs. I've been playing for 45 years - and as my only profession for 35 - and I still play with records/CDs regularly. For me, playing with other players is where I honed and polished the skills that I learned and developed playing to records.
At least, it might give you a controllable outlet for your playing until some of the other stuff in your life pulls itself together.
Best of luck with everything,