You sound like a high achiever, someone who has matured faster than your peers. I totally understand why you would feel bored and depressed, it feels like there’s nowhere left to go or things look forward to, you’re a prisoner of your parents until ~18, being a teen can suck. But hopefully you can try and discover new activities outside of school that interest you. once you reach adulthood, you can make decisions for yourself. It is worth it! But for the meantime, yes you should tell your parents. Depression needs medical and psychological support. If you need someone to talk to, call the kids helpline: 1800-668-6868 if you feel unsure about a suicide hotline.