My wife skipped two years and I skipped one. Neither of us think of it positively. She wasn't academically ready for a two year skip.

Looking back, I am against my skip because I was relatively small in my early teen years, and I was not competitive in sports. I think this physical aspect is something that parents should seriously consider, beyond the is my child intelligent and sufficiently social.

We have chosen not to skip our children. We are fortunate that my children attend a fantastic school system (a recent Davidson Fellow was from our school system). While DD could handle a one year skip, and DS probably needs a 4-year skip, we have chosen to keep in them in their normal grades and supplement through programs like CTY and AOPS.