A substitute teacher working at an Iowa high school was taken off the sub list a few weeks after telling students that they had horrendous grammar during class. S. Keyron McDermott opened up her piece in a local newspaper saying the high school terminated her last fall for telling students that their grammar skills were subpar – by around 10 years. “Last Halloween, I dressed up like a teacher – not exactly an alter ego; I have a certificate – went to the local high school, and substituted in Family & Consumer Science,” McDermott wrote in an op-ed for the...