There is just an extra benefit if terminals will have lockers. I am glad that KL (Kuala Lumpur) Central station has that extra facility where you can leave your luggage or stuff while waiting for your next trip. I was just reminded of this because when we traveled by train from Hatyai to Kuala Lumpur, we met fellow passengers (they're from Russia) who were going to Kuala Lumpur for a few days before heading out to Bali, Indonesia for their family trip. They had a place to stay in KL but they can only go there in the evening. We arrived KL in the morning. So they had a whole day to spare. And so while out touring KL, they left their stuff in the locker. It's really good especially for backpackers like them.
And so when I thought about it, I also thought it would be good for my son, who is going to Primary 1, to have his own school locker or gym locker. I am sure that their schools whould have school lockers, too, especially that they have to change into their sports uniform one of the week days. And what about the charges? I'm sure it's minimal since they're just for students. I guess there's lockers for sale available too.