A traditional custome day in 'a' school in Penang

This was told by one of my friend. Students in a Greenland area girls' school was told that a certain day within that week had been fixed as a 'traditional custome day' and as for that, they're encourage to wear their own traditional custome to school on that day, however saree and kebaya r not allow as the reason given by the teacher is: saree is too sexy as the waist will be expose; kebaya is body fit, will expose body shape, too sexy.......However cheongsam is allowed only if the tigh area r not cut up too high......
WTH??!! Aren't those three above not traditional custome??
Results on that very day: only baju kurung is the only most 'suitable' traditional custome to wear by students.....
So you see, when educators with pea size brain and use it to think with the bawah tempurung mind, plus without having proper knowlegde and respect for others tradition regarding our own country multicultural background, how is it possible for our country to build into a unity multiracial community???