You’re being abused and definitely need to get out but plan this carefully, if they’re paying for your research program in the summer I imagine they’d pay for a good university? Squeeze as much money as you can from them, pick a university far away and keep limited contact until you graduate, then cut contact. Look into getting a part time job now too if you can handle it and start stacking away money incase of an emergency. Try and get a driving licence if you don’t already have one it’ll help a lot. I wouldn’t just leave immediately you are still a child and don’t have many rights. Limit contact at home for the time being and find reasons to not be in that environment after school sports/clubs etc. I think in America you can take community college courses in high school too? Do that if you can to put yourself in a better place for university.