World Folders for Organization

I'm a media teacher in a school that is 3rd-5th. I have about 300 students sharing 29 accounts in the media center. Each classroom has multiple worlds for different reasons. I'm wondering if there might be an option to have folders in the 'My Worlds' tab of the launcher. I'm big on organization and it feels a little crazy right now with 40+ worlds scattered on my screen.

Maybe there's a way to organize the worlds already. If there is, could someone teach me how to do it?