One pad bank for each school is an initiative from my experience with students and staffs asking me to give them pad because their Menstruation started and they aren't prepared for it .I didn't have a pad that day but I improvised one for each of them.
I believe this will be happening in some other schools too and if there is a pad bank around ,each person on Menstruation unprepared with pad would get one piece from the bank free and also be happy back home to freshen up .