We too, have a potty schedule. Ryan has been potty trained since June 2011(he'll be 6 next week). He never showed any interest, OR that he even had a clue when he had to go. And then one day, it clicked. He decided he didn't want to wear pull ups, he put on his Toy Story big boy underwear and that was it. He had 2 accidents, and from then on has peed in the potty. Pooping is another story, though. He will still go in his underwear if I don't catch him in time. I don't know if it's that he can't tell until it's "too late" or he has the general fear of pooping on the potty. But we just keep working at it...one day he'll get it.