My fractured relationship with my family

Long story short, My professor who knows my family well, has been coming to our house for dinner for years now. He identifies as liberal with my family being conservative. That never effect them at all but here's where the story comes together.. He's been penetrating me both front and back saying how he needs to dominate a young girl who's conservative. I told my parents but just got mad at me saying why I'm making stuff up.. It wasn't until they caught him in the act the other month.. This has been going on for 2 years. We're still in court rooms but we can't get him convicted due to lack of evidence. Ever since the whole ordeal it's been quite and awkward in my household.. It unfortunately doesn't stop him from contacting me demanding for "more ass". I don't know what to do. I don't want to fuking live anymore. Like fck this! What's really tough though, is that he has control over my grades! And I really need to pass this class in order to get enough credits to go into esthetician School. I need advice/help!!