I graduated with a degree in civil engineering in Dec 2010, but only after realizing a year prior that I would rather study physics, so now I'm considering going back to school. I'll be honest, the only CE class that interested me was fluid dynamics and I put as little effort into my other classes as was required to pass, so my graduating GPA wasn't that great: 2.4xx. In the beginning I had no plans for grad school, so by the time I had decided I wanted to pursue physics it was too late to save my GPA. Fast forward to now, and I'm trying to figure out what to do. I've taken up through calc III, had a couple basic physics courses, and took one 300 level physics course for fun, but not for a grade. In order to get into a masters program, I need to take the GRE specific to physics, and I would undoubtedly fail with flying colors. What I really need is a solid 1.5-2 years of undergrad classes to catch up and prepare myself for graduate school. So this is where I'm stuck: Do I apply as a freshman? Do I try and apply as a grad student and hopefully talk someone into hearing me out? One last thing: I have a decently paying job right now. I was fortunate enough that my parents paid for undergrad, but they won't be paying this time around, nor would they pay for grad school; so any way you cut it I'll be in debt up to my eyeballs if I go back to school. I'm not 100% sure what I would want to do after more school, but I'm obsessed with keeping up with the latest research, so maybe a research job is an option? I can also see myself as a teacher; I wouldn't mind getting paid to talk physics all day. Realistically, what are the odds I'll be able to pay off we'll say...$125,000 in student loans in a reasonable amount of time with a graduate degree in physics? ANY opinions are much appreciated, as I've been wrestling over this in my head for a solid 6 months now and I haven't made much progress.