Silicon Valley Entrepreneur Takes on Teacher Tenure With Massive Lawsuit

In recent years, teachers unions have been engaged in a pitched battle against a handful of reformers, many of them wealthy or backed by big wealth and seeking to shake up California's educational system. Take the Vergara lawsuit, pending in Los Angeles over teacher tenure. The suit was brought by a Silicon Valley-based non-profit called Students Matter, a non-profit backed largely by one man: David Welch.