I am a history teacher but have to teach some PE due to a lack of staff. This is an all-boys comprehensive. Our school has just returned to a shorts-only policy for indoor PE, like it used to be when I was a boy. Pupils are now expected to be in white shorts, barechest and barefoot. It has been introduced on health & safety reasons, as another poster already mentioned. In fact, it was quite difficult to verify that boys kept their shirts tucked-in during PE and we had one near accident because of this. I must say that there has been a noticeable difference in boys attitudes. FIrst of all, we have fewer lads 'forgetting' their kit and they seem more active and motivated in PE. In some way, being shirtless, seems to make them more aware of their bodies and eager to exercice. However, this is not true off all boys, as some seem to find the experience terrifying; but of those, most have now setteld in, it is probably just a matter of getting used to it. We do not make boys go outside with no top on, expect when they forget to bring their outdoor kit. I would be interested in hearing other teachers' reactions to shirtless PE classes as it seems to come back into fashion now.