You want to join the Smartypants Society? Well, it's not going to be easy.

Rekha ShankarSelf - Host

Paul RobalinoSelf - Society Member

Zach ReinoSelf - Presenter

Grant O'BrienSelf - Society Member

Ryan CreamerSelf - Presenter

Tao YangSelf - Society Member

Waleed MansourSelf - Society Member

Jordan MyrickSelf - Society Member

Amanda Lehan-CantoSelf - Presenter

Kwesi JamesSelf - Society Member

Oscar MontoyaSelf - Society Member

Lauren LopezSelf - Society Member

Kylie BrakemanSelf - Society Member

Dylan AdlerSelf - Society Member

Robert ReichSelf (video footage)

Maame-Yaa AforoSelf - Presenter

Joey RichterSelf - Society Member

Londale Theus Jr.Self - Presenter

Rachel ScanlonSelf - Presenter

Catherine McCaffertySelf - Society Member

Vivian Jenna WilsonSelf - Society Member

Angela GiarratanaSelf - Society Member

Kendahl LandrethSelf - Society Member

Josh RubenSelf - Society Member

Zeke NicholsonSelf - Presenter

Joey CliftSelf - Presenter

Danielle RadfordSelf - Society Member

Hannah PilkesSelf - Presenter

Tien TranSelf - Presenter

Jarvis JohnsonSelf - Society Member

Jerah MilliganSelf - Society Member

Dhruv Uday SinghSelf - Society Member

Brett MalineSelf - Society Member

Ruby KarpSelf - Presenter

D.J. MausnerSelf - Society Member

Roz HernandezSelf - Society Member

Hayley Marie NormanSelf - Society Member

John MilhiserSelf - Society Member

Rashawn Nadine ScottSelf - Society Member

Talia TabinSelf - Society Member

Claudio SaavedraSelf - Presenter

Jeff WhitakerSelf - Presenter

Brian David GilbertSelf - Society Member

Bente EngelstoftSelf - Presenter

Corin WellsSelf - Society Member

Jamie LoftusSelf - Society Member