It's the day of SpongeBob's boating school test. He rides his bike to Mrs. Puff's Boating School and jumps into one of the boats. Once SpongeBob is in the driving boat, he tries to move out of the parking space, but crashes into two cars continuously. After crashing too many times, Mrs. Puff then inflates so much, she sends the car airborne. SpongeBob then crashes the car into the lighthouse, injuring Mrs. Puff.
In the hospital, Dr. Forrest clarifies that Mrs. Puff's inflation sac was popped in the collision and she will not be able to "puff" again. Mrs. Puff has to be tranquilized after she leaped onto SpongeBob and man-handled his nose. SpongeBob then begins to ramble and the doctor tranquilizes him as well. He then visits Mrs. Puff with a bouquet of flowers along with the hundreds of other flowers he sent her, which she appears to be allergic to.
After forcing her into a wheelchair, he pushes her down the hallway. Doctors are seen sprinting through the hallway with muscular men on the gurneys. SpongeBob stops the Purple Doctorfish and asks him what is going on. He replies saying the Demolition Derby fish are about to battle in the hospital room. Mrs. Puff then imagines them smashing into SpongeBob and killing him. She comes up with a plan and claims she has a way for SpongeBob to earn "extra credit."
After leaving the hospital and talking to Captain Lutefisk, she shows him how much damage SpongeBob can do with a boat, though he is just using a steering wheel. Lutefisk says he is perfect for the derby and makes him a sock mask.
At the derby, Mrs. Puff is enraged at how SpongeBob is defeating the competitors only by serendipity. She then grabs a giant monster boat and starts to chase after SpongeBob, trying to murder him. They then collide into the boating school, where Mrs. Puff regains her "puff" again. SpongeBob then asks her "So how much extra credit did I earn?"
The cover has SpongeBob in a small red boat, looking excited at the demolition derby while he's being chased by Blow Torch and The Kruncher who have much larger boats than he does.
I can turn into a skyscraper!
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On the opposite side of the book, it came with the another book called Class Confusion.