If you're like me, you took the ACT and SAT junior year, and were planning your senior year classes, and just were fed up.
I only had two credits left, but my school didn't allow me to take them early.
So I got my GED.
There's some stigma around getting your GED, but I'm here to tell you that that's often unfounded. Colleges are willing to accept hard-working and mature students who are ready to move onto the next phase.
They still will look at your HS grades, so don't just give up on that, but you can jumpstart your college education.
(GED is time consuming but really easy. I've never been good at math, and I got honors math.)