I'm going to bet there is more to the story. I would go and ask to meet with instructor and the head of the school to get to the bottom of it. I am going to bet that if it is true, the instructor is going to be reprimanded/fired, and if there was more to the story, you probably want to know the rest too.
DD is in karate, and I can't imagine anyone at our dojo treating a child that way.
Middle school teacher by day, super mom by night
Mommy to The Boss~2007, The Energizer Bunny~2009, and The Princess~2011
My kids are no longer in diapers, but somehow, my computer keeps finding its way back here...