Is Jack Ingram smarter than a fifth grader? He'll try to prove he is, all for a good cause.

Jack will be a celebrity contestant on the 'Are You Smarter Than a 5th Grader' game show this week, playing for Friends of TOMS. The charity, which supplies shoes for children in impoverished countries, was founded by an old friend of Jack's.

"It's crazy how things in your life come full circle sometimes," the singer reflects. "Back when I was 17 years old, my first job was as a camp counselor. One of my campers was a guy named Blake Mycoskie, who is now the founder and the 'Chief Shoe-Giver' you see on all the commercials for TOMS ... Blake was at one of my shows in L.A. recently, and we started talking about how we could partner up on a few things.

"So now here I am, about to prove to the world on national television that I am probably not, in fact, smarter than a 5th grader," Jack adds. "I will be able to say that I helped my buddy put shoes on kids all over the world who didn't have them before though, which is a lot cooler than knowing the capitol of Hungary! And if you don't believe me, ask Kellie Pickler. I bet she'd be on my side!"

Kellie was a contestant on the show last year and didn't know the answer to the question, "Budapest is the capitol of what European country?" Her response: "I thought Europe was a country!" Still, she walked away with $25,000 for her chosen charity.

Kellie's fellow 'American Idol' alum, Bucky Covington, will also compete on 'Are You Smarter Than a Fifth Grader' this week, along with 'That Kind of Happy' singer Emily West.

Jack will make another television appearance while he's in L.A., making his debut on 'The Tonight Show,' this Friday, Aug. 14. He'll perform his current smash hit, 'Barefoot and Crazy,' the lead single from his upcoming album, 'Big Dreams and High Hopes.' You can also see Jack's cameo appearance on 'Army Wives,' Aug. 16 on Lifetime Television.