My children’s grade school did this every other year. It was a Catholic school of course. Once my younger son went in jeans and a tshirt. Teacher wanted to give him a demerit, had to be in a costume or uniform. He told her he was dressed as ‘saints unknown’. Principal laughed at that and removed the demerit.
LOLOLOL. After another Baptism of a child named Madison, or something like that, I asked our Deacon when the Church had changed the rules about children being given a Saint's name at Baptism. He replied, "Oh, we do not know whether there is a St. Madison, or not. Perhpas she hasn't been born yet."