Nation's Dumbest

Twelve celebrities report for their first day of class, tackling a logic challenge, a nostalgic quiz on grade-school subjects, and interactive zoology and geography tests as they work their way towards the high-stakes final exam.

The tests get trickier as the all-star students face a mind-boggling lightbulb game, race to answer questions before a balloon bursts, and team up in a spelling bee as they work toward the high-stakes final exam.

After a deceptive challenge, the class receives its first rankings. Then, the all-star students take on an intense chess-themed trivia game and a school picture day challenge as they work toward the high-stakes final exam.

With only nine contestants remaining, tensions rise and rivalries start to form as the celebrities push themselves to their limits, tackling everything from general knowledge trivia to a game of life-sized human labyrinth.

The dreaded midterms are the last chance for the celebrities to avoid being in the bottom half of the class. But will a mystery guest outshine them all?

We're down to the dumbest half, so Jack pairs them off into Study Buddy teams to give them a boost. But are two brains really better than one?

Bonds are tested as the remaining five celebrities battle science, and each other, with explosive results.

As the final four inch closer to winning the Nation's Dumbest trophy, the dumb answers continue, and the celebrities wonder whether it was actually a good idea to come on this show.

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