*g* I am heading down that road (we officially enter the teens this year) with my eldest. From grade 1 his homeroom teacher started suggesting we stop speaking English at home because he couldn't express himself (and threw tantrums instead). But it's not the languages he speaks, it's just his personal wall.... Best of luck to you with your son; the world can be hard on introverts. (But maybe we are parenting the next generation of hotshot pilots? Or people who play them on TV?)