With President Obama slated to give a televised address to public school students across the nation on Tuesday, schools in the D.C. area – including the school from which Obama will broadcast the speech – are trying to play their cards as diplomatically as possible. “Most people I've talked to were saying that they were extremely concerned that schools were being used for political platforms,” said Ivy Allen, the assistant public information officer of Loudoun County Public Schools. Loudoun, like Arlington, Fairfax, Frederick, and Prince George Counties – all districts that surround D.C. – have received a landslide of calls...