Can a child leave my home at 17 without parental concent

Technically, your daughter is still minor. If she were picked up by the police, she would be returned to you. But what will that solve. That said, if you are having issues with her, I recommend counseling for both of you. The issue is often communication.  I have found that sending people a letter makes them feel valued and there is no heat of the moment. The world can be a dangerous place for a youngster who does not see the dangers of rampant addiction and human trafficking. Let her know how much you care and what she means to you. She is not a baby anymore but she still has a lot to learn, some things she is going to have to figure out for herself others, you can provide important guidance. She needs to feel respected.  Remind her that finishing high school will mean $250,000 or more to her lifetime earnings- because people who don't finish school ear much less than people who do over their lifetime.  If you can get her to agree to a "life contract," what you will do and what she will do, it might help put things on a better footing. best of luck to you.