Formulating children's class

Whooo Hooo one of my very favorite parenting exercises-trying to selectively choose who will be in your child's class for the coming year-I love all the jockeying and whispering-the excitement of who got what-all the intellectual, artistic and mysterious concentration worthy of formulating an expensive wine or a fine scent. The lightening bolt hit-CAN I ACTUALLY CHOOSE INSTEAD WHICH KIDS AND PARENTS I DON'T WANT IN MY KIDS CLASS? Sure, I love our friends-they are kind, funny and sweet and we would peacefully enjoy catching their snotty colds all next winter but not nearly as much as we would love not to have to interact with some of the others. Really the school should hand out a form titled who has been a complete pain in your ass last school year? Please list in order of priority from 1 to 5 your preference to not be together.