thats really cool. In fact i remember my primary school classes like from year one to 6th grade had the exact system. Cept we didnt need uniform. The secondary school im in, in the 7th grade and onwards we have to wear uniform in a certain way and we all have to have ponytails if possibile. But now its all changed. Fashion has taken over
The example u gave of the classes remind me of megaman NT warriors. Lan Hikari always was in a class called 2-A and i always wondered why that was. And now you've explained that clearly. Arigatou ^^