Classes only started a week ago, but so far I'm 5 for 5 on going to class padded every day of the semester! Generally, I'll start off wearing something thick in the morning (M4/NorthShore Supreme), try keeping it dry til around noon, then find a single-stall restroom to change into something thinner (Delta-Form or Tena Flex) for my last class and the ride home. In my experience, so long as you avoid comically large bulges, undeniable waddles, and offensive odors, there's no way anyone pays your crotch enough mind to notice you're not wearing "typical" underwear. And if they do...well, they're paying your crotch a weird amount of attention, that makes them the creepy one!