Seth Rudetsky's Back to School SiriusXM

Skylar Astin had a lot of jobs in high school. First of all, he was already acting professionally. But he also worked as a telemarketer, which he used as an opportunity to practice his dialects, and at Hollister, where he had to ask grown men, "Do you support our flops?" This is the last episode of Season 3, so thanks for listening and don't forget to share with a celebrity-obsessed friend!

Noah Wyle of "ER" fame went to a boarding school, where, in addition to his schoolwork, he had to care for a horse. But in between mucking out the stall and riding practice, he still found time to get in plenty of trouble and discover his passion for acting.

Megan Mullally, AKA Karen from "Will and Grace," knew she wanted to be a performer from day one. She entered high school focused on ballet, but one fateful cabaret-style singing performance gave her the bug.

When Ryan O'Connell, the creator of "Special," came out of the closet, he threw a sexuality reveal party that was the talk of his high school. Plus, growing up with cerebral palsy, wanting his life to be like the movie "Thirteen," and how a medical malpractice lawsuit changed his life.

Comedian Joel Kim Booster left home at the age of 17 after his super-Christian parents learned he was gay. On this episode, he explains how he navigated that alongside the regular trials and tribulations of high school.

Comedian Sydnee Washington's high school experience was the opposite of boring. Going to prom with her godbrother? Check. Setting her house on fire? Check again. Plus, hear about the case of toxic shock syndrome so memorable it "made her who she is today."