I'm the last person to suggest that grade-skips are the perfect solution. 'cause they're not.
Amen. At this point, my feeling on DD's skip is "all of the other options available to us would have been worse."
It's very easy to fall into the trap of thinking the grass is greener on the other side of the skip-decision.
I've been very much hoping that one skip would be enough, because I'd send a just-turned-17yo across the country to college without hesitation, but a just-turned-16yo not so much. And then I hear DD say things like "I probably won't be a scientist when I grow up, because you don't learn much science in 3rd grade," or "I'm pretty far ahead of my class in math," or see her pick out books at the book fair based on how thick they are, because otherwise they'll be finished too quickly.