Okay guys so all of my grades right now are F's... that sucks huh:(
But anyway, my dad won't let me drive unless I get above B's I have like four weeks of school left how do I get my grades up? I need serious help... please help me!!

I would say it is far too late at this point you will be lucky to just get them to D's to pass.

So you need to address why you are failing, no study, bad study practice. Do you need tutors, do you just not try. Do you have a learning disability ?

Address the issue, make a plan to change and start working on it, and hopefully next year you can make a difference

You should ask for any missing work that you did or didn't do and then do it take part in anything that will get you extra credit then study hard and do extra stuff like I said your grades will do better and like I said if you failed anything like any tests or exames or any homework ask if you can do it over and at least get half credit for them