UPenn requires the entire testing history to be submitted (all ACT and SAT scores). I took sat once at the beginning of junior year without any preparation and got something below 2000. Then I retook it in January and got 2300+. However since Upenn wants to see my entire test history, would that hurt my admission?
No it won’t hurt anything.
I’ve read that UPenn will seriously only consider your highest score, but they want to make sure your scores are relatively consistent.