Caius... more info is needed hermano, if you are in a public school and the reality is how you are describing it I would say leave it in next month, you are 16-17, its enough age to inscribe yourself in a nocturnal school, you know only adults assist there and generally only people who really wants to learn; and we need to be honest here, we know education in our country is very far from ... good/nice/elemental/digestible... but you'll need it for everything. If needed I would say do it without the knowledge of your parents, but be responsible for what are you going to do.

And remember always there are another ways to solve things, perhaps they don't seem smart enough today but in the end they are.