We started potty training my son right at 2.5 years old. We've been working on it for 3 full months. He does pretty good at home (still has an occasional accident), but he absolutely refuses to go at his pre-school. He has accidents every day he is there. We've tried to reward him (m&m's, stickers), we've put him in pullups to see if that would help, nothing seems to be working. We've been doing it for 3 solid months and he's pretty good at home so I don't want to go backwards and put him back in diapers but I'm at a loss for what to do at school. He will be three years old in June.