I'm not this super smart or anything, but I was allowed to skip a grade and the result was hell for me - I was a scrawny kid even in my age group and a year of physical development means a lot at young ages. I was taken out from the environnment of my peers and placed with total strangers who were all told that 'I was special', which didn't put me in a favorable light. I basically had no friends and quite a few enemies for a year before my parents wizened up and took me to a different school.