Unfortunately, this just leads to apathy with K-12 students. Why bother, when you have no idea you’ll ever get into the college you would have previously qualified for?
Intiguing, following on from that, if Turley's idea were to happen, then admission to preferred schools would simply be postponed a semester, when a mad transfer scramble would ensue and re-align the load.
Then you would have Ivy's carrying their initial 'random' class, and a semester later, adding the class that they wanted, while bottom schools would mostly empty out. Now that would be interesting...