text: Boys are harder to train for some reason - and three is an average age for a boy (Ususally 2 for a girl).  Try asking him every hour or so if he's gone to the bathroom or needs to go.  Don't put him on the potty without asking if he has to go first, and then let him do as much as he can by himself without assistance.  Only help with things he struggles with (like buttoning pants) or asks for help for.   If you continue to ask him if he's gone, it will remind him if he needs to.  He may just not be used to realizing what it feels like to need to go potty before he actually goes.  Good luck.