I took the sat really early and got a 1310, then I took it again and got a 1490. Will the 1310 hurt my chances at a school like Stanford that does not allow score choice (so I have to send both the scores)?
I think it shows that you made tremendous improvement. I wouldn’t say the 1310 hurts your chances.
I don’t think that you have any problem here. Congratulations on great scores!
However, I am sure that you are aware that Stanford is very hard to get into, and is pretty much at best a lottery unless you are the child of a popular president.
Congrats on the score! I believe Stanford only focuses on the highest score.