Sending SAT scores after application for REA

[skieurope]

Here’s what Stanford says:

We recommend students take the required tests well in advance of the application deadlines. It is unlikely that scores from tests taken after the deadlines will arrive in time for review. We cannot delay the review of an application in anticipation of scores that will arrive after the deadline nor can we guarantee that late scores will be reviewed.

http://admission.stanford.edu/application/freshman/testing.html

So the answer to your question is most likely “No.”