Is Kellie Pickler Smarter Than a 5th Grader? Is Regis?

• Aug 28, 2007 04:11 PM ET
• by Matt Mitovich

Fox has announced the lineup for a celebrity edition of Are You Smarter Than a 5th Grader?, airing Sept. 6 as the hit quizzer's sophomore-season premiere, and benefiting charities. The A- and B-list names going for A+ scores are morning talk king Regis Philbin, American Idol alums Clay Aiken and Kellie Pickler, Extra's Billy Bush, skateboarder Tony Hawk and Miss America Lauren Nelson.