If you mean you want to change the 5 schools that you originally put down to have your scores sent to, I don't think you can change those. You have to pay 25 dollars for each additional school you want to send your scores too after the original 5 you choose when you register. This happened to me, I signed up for the OAT before knowing all the schools I was applying to, so I just picked the closest ones to home, most of which I ended up not even applying to, so I wanted to change the schools I was sending my scores to. I called someone at opted or somewhere, and they told me I cannot change my 5 schools but to go to the opted.org site and request (and pay) for scores to be sent to additional schools.