1. fuck school - its a system designed to route out the disobedient (like all of us mostly)
2. fuck your boss - that doesnt mean quit - if its logically financially to stay then do it, just put in the bare minimal and spend brain time on your own pursuits. Every minute doing something menial for the boss is his ££ but theres a stage where we all should do it, if even just to get a lump together.
3. do it, know your going to do it and plan. Having a job and running an online empire is heavy work, but doable - so like all these guys say - run both in line for a while, even if your nonsulent at work itll take a few months of nonsulent work for your boss to even realise let alone go through the bullshit we have in the uk to sack you. You could always go mid way and get a better job in the mean time - I live in the uk and £16k is low man, whats your skillset?