This week marks the seventh-annual National School Choice Week, and the organization behind it expects this year's event to be the largest yet, with approximately 20,000 independently-organized events taking place around the country. Started in 2011, National School Choice Week considers itself “the world’s largest annual celebration of opportunity in education.” It's even crossed over into pop culture. In 2013, the Jonas Brothers, who were homeschooled, launchedNational School Choice Week with a concert in Phoenix.