I think the bus company will notice if he leaves a piano on the bus
Seriously, we have collected a PE kit 3 times and violin once from the bus company. They are used to it. Also be prepared to visit for several evening concerts throughout the year: I think we have been to 4 or 5 already and have the end of year concert coming up - and DS is still in year 7. The standard is very high and the music teachers and peripatetic teachers are great. Mrs Madden is a particular star, especially for string players. I hear good things about Mr Henderson too.
I am sure your DS will enjoy it.