See what billionaires, CEOs and other business leaders looked like in high school

Before they were on shows like "Shark Tank," contributors on CNBC or running for president, the world's most famous billionaires, business magnates and CEOs were just regular high school students.

Barbara Corcoran was unrecognizable as a high school cheerleader with blunt bangs and long, blonde locks -- but it's clear the real estate mogul's spirit and pep have withstood the test of time. Corcoran's co-star, Mark Cuban, also rocked a decidedly different 'do in high school, but other than his shoulder-length tresses, the outspoken billionaire hasn't aged a day!

Click through the slideshow below to see the likes of Steve Jobs, Warren Buffett and Marissa Mayer from debate club to the computer lab and everywhere inbetween.

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