Batch export sub-folder

Hi all,
In first sorry for my english, i'm from belgium 😊

I have a problem with exporting my photo in sub-folder.
I explain:
I make photo in school
I import all in a "catalogue"
i create a album for each "class of pupil"
i want to export all photo in same time but with subfolder for each class.

What must i do for do this ?

I use C1 last version on windows

Thank you for your help.
Franck