Wow, two things surprise me here:
1) Kids are allowed to go to school in their pajamas. Pajamas are what you sleep with, right? They are not sweatpants or oversize pullovers but just matching pants and tops with sweet patterns like teddy bears, candy or pink hearts. I mean, we could only do this on a special day called Carnival. Then we'd go back to the normal thing. I've never ever been to a school with wrongly dressed kids, nor have I taught any improperly dressed kids.
2) Teenagers wearing pajamas! Really? I can understand a kid doing this because they don't care -most of them, anyways- and they want to be comfy, period. But teenagers tend to struggle with their body image and want to look amazing every single hour of their young lives, at least in Spain. Last week I actually saw a teenager wearing 5 inch heels at the library. For real. So I just can't understand how a teenager would wear pajamas to school, unless they are the sexiest pajamas ever, which would make for another controversial topic.