Lawyer; custody question.?

I live in Spartanburg, SC; and live with my mother there. I want to move to my dad's house in Greenville, SC because I'm happier there. By far. However, my mom who has full custody won't allow me to move. From what I've been told by the SCR at my school, is that at 17, which I am, I can move into my dads house without my moms permission and she can't stop me. Is this true?