I am a junior in high school and I got a 1220 (out of 1600) on my SAT. However, I have an unweighted GPA of 3.94 and a weighted GPA of 5.12 (IB and AP classes). I plan to retake the SAT as of right now. Can anyone tell me if they think I would get in to Rutgers at New Brunswick with my current SAT score and mediocre GPA? I would really appreciate it, thank you! 
“mediocre GPA” You have a 5.12 weighted. Why are you even thinking of Rutgers? Improve your SAT and apply to an Ivy.
I mean it would by be a bad idea to consider RU. With your stats, you can probably get some pretty good scholarships. You have a high chance of getting in, as there are people with average GPAs and SATs that do matriculate to Rutgers.
Your GPA is great! I’m sure your next SAT will improve on the next take. There’s nothing at all wrong with Rutgers…some of the more successful people at my company are Rutgers grads. Especially if you can get a scholarship. Are you in state NJ? If so Rutgers can be a bargain. You may also want to look at TCNJ. Study up and see if you can get your SATS up over 1300 to help with merit scholarships. Best of luck to you!