Amy Murray is the director of early childhood education at the Calgary French & International School in Canada. The following post, which appeared on her blog, Miss Night’s Marbles and which I am republishing with her permission, is a powerful open letter directed to parents about THAT kid, the one other kids go home and talk about, the one who is violent, curses and gets angry in class, the one who parents worry will hurt, disrupt and perhaps influence their own children. Murray is also the co-founder of #Kinderchat (www.kinderchat.net), a twitter-based global community for educators of young children. She is a speaker and trainer on learning through play, self-regulation, behavior management, and the use of technology within the classroom.