I am going to UT, so naturally I accepted the admission and sent in the enrollment deposit.
But do I have to respond to all the other colleges that I am not going? Or do they just assume that since I didn’t pay the enrollment deposit for them I’m not going?
At this point they assume you are not coming.
They will assume you are not coming if you don’t send in a deposit but it would reflect well on you and your HS to officially decline. Some schools give you an easy way to do so (portal, postcard) or you can send a quick email to admissions. Again, it is not required, but it is a nice way to finish off the process and only takes a few minutes to do.
I sent an email to the admissions office. Most of them responded and were very courteous about it. I just thought it was the polite thing to do.