accepted off the waitlist..now what?

i was accepted off the waitlist into one of my top schools and have chosen to go there
however, i have enrolled in another school already
what do i do to let that first school know that I will not be attending next year?
I do not want to burn any bridges
thanks!

Just call or EMail and say you got in off a wait list. They will understand.

. . . and, just so you’ll know, it is almost certain you’ll forfeit your deposit.