Are Clay and Kellie "Smarter Than a 5th Grader"?

FOX announced this week that “Are You Smarter Than a 5th Grader?” will do a celebrity edition and two of the contestants are former Idols.

Clay Aiken and Kellie Pickler will join Regis Philbin, Billy Bush, Tony Hawk and Miss America Lauren Nelson.

Jeff Foxworthy is going to have a blast with Kellie…