Clay Aiken and Kellie Pickler won't be able to sing their way out of this one.

Fox has announced the former American Idol finalists will both compete in special celebrity Are You Smarter Than a 5th Grader? episodes that will air on Thursday nights during the November ratings sweeps period.

Additional celebrities who will be appearing on the Mark Burnett-created game show's November episodes will include Live with Regis and Kelly host Regis Philbin; Access Hollywood correspondent and former Grease: You're the One that I Want host Billy Bush; skateboarding star Tony Hawk; and Miss America Lauren Nelson.

Similar to Burnett's recently announced celebrity The Apprentice edition plans, Are You Smarter than a 5th Grader?'s celebrities will be donating all of the money they earn to charity. 

New episodes of Are You Smarter than a 5th Grader? will air on both Thursday and Friday nights this fall, beginning with a special two-hour episode on Thursday, September 6 at 8PM ET/PT.