In an age of insanely prevelant food allergies in kids (where you've got peanut-free classrooms, special lunch tables, etc.), I can't imagine the school giving out food to kids.
My kid wouldn't be able to have the starburst b/c of food allergies.
But he'd likely be the kid who would remember that folder every single time (and like Pat said, it wouldn't be for the treat, b/c he gets that whenever he wants).
And even if he got something different. It'd still be DIFFERENT. And he'd probably feel bad about that.
I think the reward part is gar-bage (but that's school, and that ain't gonna change anytime soon, I imagine), but I think it's far weirder that the school's employees are feeding kids in a day of hugely varying diets (allergies, religious reasons, vegan, veggies, etc.). Seems really antiquated.