My son has been going to the potty since he was 18 months old. he will pee and poop when and if he wants to. He attends a day school all week and has the same pattern there as well. We have never pushed him to go to the potty full time and still allow him to wear his pull ups. His school is telling us for him to be able to move up with his class in the summer he has to be completly potty trained and if not he will be held back. He know when to hold it and when to let you...