At the boys' school lessons are just 50 mins long and in yr7 and yr8 they only have single lessons of PE, so I can understand that time is very short; they have to get changed super-quick at either end, and there is certainly no time to shower.
(I lived in a house with no central heating and hot water was rationed, so I used to adore having hot showers at school! They couldn't get me out.)
But atm ds2 is doing rugby at school; his PE lessons are at the start of the day - P1 on Monday. He's come home later (after a drama club after school) and is absolutely caked in mud from his thighs to his ankles. He's been sitting in this for 7 hours. It's pretty grim, isn't it? (It's been this way twice a week for the past 3 weeks. At least he's throwing himself into it.)
I can't see there's any alternative, but it really isn't great.
Just wondered what happens elsewhere.