Come on! It is you who do not want to donate, not your kids. As far as I know, most kids want to be the one who donates the most or the one who sell the most cookies. Help your kids be the ones they want to be. Meanwhile, have an adult-to-adult conversation with the school if you are really uncomfortable with the way the school handles this issue. Dont let a kid get caught in between the disagreement between school and parents. It is not fair to a kid because he/she does not have to be like you.