Subject Test - Retake???

Its kind of late to be retaking tests, I know, but I’m only now realizing my math 2 score may be a bit lower than I thought. I got a 770, which obviously isnt bad, but for the t20 + ivy league school I’m going for, im not sure. MIT, Caltech, Stanford, and other CS and STEM heavy schools arent even on my list, but even so, does this warrant a re-take?

Absolutely not. A 770 is a great score, and if you get rejected, it will not be the result of a 770. Spend the time polishing your essays. Do not get hung up on the percentiles; they are meaningless in this case. Good luck.