The Insider.com

Pauly D has risen to fame via the reality show Jersey Shore, but he hasn't forgotten his Jersey roots, and on the season finale of his spin-off show, The Pauly D Project, he goes back to his high school.

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In the clip above, Pauly walks down the halls of his high school with his former biology teacher, Mr. Russo. "This is the corridor where Pauly D would walk and try to pick up girls but was very, very unsuccessful," Mr. Russo jokes.

Although he has been rambunctious at times on reality TV, Pauly's former teacher holds that he was a good student and never got into trouble. "Very good, very well-behaved, and he always had a tan," his teacher says.

However, unlike his well-behaved high school days, Pauly D is up to mischief when he finds his old locker and decides to write "I was here" on the front of the locker in marker.

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In the clip below, we see that Pauly has bigger plans than tagging up the halls and discover the real reason that he came back to school—to be a surprise DJ for the school's dance.

A shriek of cheers hits the ballroom and everyone flocks to the stage as Pauly D takes to the turntables. It doesn't take long before he has the entire room in a fist-pumping frenzy.

Check out the full season finale of The Pauly D Project tonight at 10:30 p.m. on MTV.