Leaving home at 17?

Okay im 17 and im only a junionr and its summer. I live in Pennsylvaina with my parents..I want to leave home and move in with my friend and her family who I already talked things over with...But my parents say im there's until I graduate...which means...

until im 19. They treat me like im nothing..and my whole life I been suicidel because of them and have had a lot of issues. They wont listen to me and what I have to say...So I need help...Will I legally get in trouble if I leave at 17 without a parents concent?

unfortunately...yes

I think you have to be 18 to leave [depends on the state laws]

Well...I read one person left at 17 and didnt get in trouble with the law because the police has said she is grown so they cant do anything.

Yes, you're still a minor:
There are actually three ways a minor may become emancipated:

Get married
Join the military, or
Go to court and have the judge declare you emancipated (judicial declaration).

Do I need my parents' consent to get emancipated?
Generally, yes. Minors who are not emancipated need parental consent to get married. In addition, minors who wish to marry must obtain the consent of a judge. Likewise, to join the military, a minor needs parental consent. To get emancipated by a judge, a minor must give his/her parent(S) notice of the court hearing, and the parent(S) may go to court to contest the emancipation. Through it all, keep a good relationship if at all possible, with parents, you need each other.

Take care !!