So I’m planning on taking the SAT and ACT in december, but would it be too late for me to send those scores in? My sister said something about sending them in later, but I’m not sure if they even allow any submissions after the Nov. 30th deadline 
From the UC website:
Submission deadline
Freshman applicants for fall 2016 must arrange to have official score reports sent to us by December 2015. If you plan to take an exam in December, indicate the planned test date on your admission application.
And don’t worry - if you report your scores to one campus, they will be shared with every campus to which you’ve applied.
Google is your friend.
Thank you