Responses
I think you’re looking for this one!
https://www.mangago.zone/read-manga/hanyuu_sensei_no_ryou_seikatsu/
Thank you! (▰˘◡˘▰)
I don't remember much about it but it was about a teacher who got sent to a school that was out in the middle of nowhere and the headmaster asked him to disguise/act as a student to help get his son on track.