The Answer Sheet: superman movie

President Obama is welcoming to the White House the five young students who star in "Waiting for Superman." Thank you, Mr. President, for drawing more attention to the tendentious movie. The $2 million given by the Bill & Melinda Gates Foundation to promote the movie apparently wasn't enough.

he founding director of a center that fosters best teaching practices saw "Waiting for Superman" and writes: "Conventional thinking tells us the best way to improve teacher effectiveness is to remove the ineffective teachers and replace them with effective ones. No doubt, this strategy is needed. But if we’re going for a fundamental shift in what we expect from schools, then a wholesale cast change won’t be the fix we imagine. We’ll risk ending up with a new batch of well-intentioned, but improperly prepared players in a flawed system."