Do I have to send all three of my act scores to the UC’s I’m applying to? Even if I wrote on my app I only took one. I heard that they can’t check and they go off of which one you put on your app. Please let me know ASAP so I know whether to send my other 2 scores. Thank you! 
No you do not, we never did. This contradicts the website which says to send in all (SAT, it never states send in all ACT which is probablly why it is confusing), but if you call them they will tell you not to. They don’t need extra figures from 100,000 applicants. They do superscore, so it might be good to send in more than one if you got a higher score in a certain section of a second test day. Here is a thread that went back in forth but one of the posters had more up to date information which was verified by a moderator. You can always call and ask too, but you don’t need to send them all. A public school shouldn’t be asking people to waste money so it is a welcome change.
http://talk.collegeconfidential.com/discussion/comment/20046674#Comment_20046674