Found a short doujin by Chinese artist on pixiv. Idea is pretty interesting.
https://www.pixiv.net/en/artworks/89478701It's about a school where student are punished to take of pieces of their clothes in according to the score of their test (out of 100) and stay like that until a next test
90+ Don't need to take off anything
80-89 - Take of skirt
70-79 - Bra and Panties
60-69 - Panties only
0-59 - Naked