The first thing I would ask myself is "Is his reason for the skip to avoid the grade with the worst bullying problem, or is it really a need for additional challenge?" Once you are certain that it isn't because of the bullying, then I would definitely weigh my options more. I agree that while the work might not be that much harder in 7th vs. 6th, the expectations as far as organization are definitely going to be stepped up in 7th, so if he is having a hard time with that now, would you want to put him in a situation where he might struggle with it even more? Just a few things to think about that came to my mind. I have a child that skipped a grade this year, and there is so much to take in to the big picture.