Ich sehe immer einen Mitschüler der sein Brot nicht isst und dann wegwirft weil er es nicht mag er sagt immer seine Mum meint er muss eins mitnehmen was meint?

Waste of food and really bad.

Is nobody in the class who wants to eat it?

I understand his mother’s view, eating at school is important. You don’t know if he has a problem in general or if it’s just about what’s eaten. And so many suitable alternatives to bread are not available. However, she should be so intelligent that she can know what happens to the bread if he doesn’t want it.