It's going to be -5 next week and still my 12 year old refuses to wear a coat to school. In his defence there are no lockers or cloakrooms so I understand why it would be a pain to carry a bulky coat around all day. But I actually think it's more to do with the fact that kids allegedly get picked on for wearing layers. Like being cold is a sign of weakness.
He did wear thermals under his uniform for a while but stopped when that too was spotted and ridiculed.
Why are kids like this? Objectively I suppose it's up to him if he wants to be cold but could he get ill from hanging around the bus stop and playground in very few clothes in such cold temperatures?