If a person does tons of homework and forgets things and sits and eats, I imagine a person can gain weight but really hard to say;)
It depends on the amount of physical activity you already do, and how healthy your diet is
Only if you don't do it and just sit there and eat and eat! If you concentrate on your school work and maybe have a snack, you sure won't be obese.
Not me, although I can't do math when I'm hungry, I usually end up staying out of the kitchen longer. I'm not good at multi tasking, so school comes first before eating.
I don't think so.