March Madness Kid Book Style

03/19/2012 01:15 pm ET | Updated May 19, 2012

For the fourth year running School Library Journal's Battle of the Kids' Books is underway. Inspired by the venerable Tournament of Books featuring adult literary fiction, the BoB (as its loyal fans refer to it) pits 16 children's and YA books against each other in a bracket style contest. An impressive collection of celebrity children's and young adult writers (this year Wimpy Kid author Jeff Kinney is one) serve as judges, each determining which of two distinguished books will advance to the next round. Avid fans follow along closely, tweeting and blogging their cheers and disappointments.

Here's the contest's official trailer (created by longtime fans Lauren Downey and Summer Otaga):