Children should not be given power over their education, but it doesn’t follow that their opinions are of no consequence. We should very much care what they do and don’t enjoy. Firstly, if they don’t enjoy their schooling they won’t put any effort into it and will not actually learn anything. Secondly, if they feel we are making them do things they don’t want to do we will lose the ability to give them sensible suggestions.  We might think they ought to learn maths, but forcing them to do it will cause more harm than good.