Justin Snider is a contributing editor at The Hechinger Report. He is an assistant dean at Columbia University, where he also teaches undergraduate writing. Previously, Snider taught high-school English and advised student publications in the United States, Europe and Asia. A California native, he holds degrees from Amherst College, the University of Chicago, the University of Vienna, Harvard University and Columbia University. Snider's fanatical devotion to the written word generally and to English grammar specifically can be traced to the worst grade of his life -- a check-minus -- on his report card in second-grade Language Arts, taught by his own mother.