Iowa wanted him to attend prep school for 1 semester. There had been some question about his academics. He recieved the grades/scores he needed. Iowa still wanted him to attend prep school for 1 semester. Darby knowing he was qualified said thanks, but no thanks. He then went on a couple visits to schools-ASU,BC, and Rutgers, maybe some others. He announced the few schools he would be choosing from. Iowa was not on that list..
Edit- this is just a simple/basic breakdown. Obviously there could be a heck of alot more to it. The staff had to have done their "homework", and they know a hell of alot more than I ever would know about the sutuation.