For a 15-year-old, Rob Baldwin of Tustin...

For a 15-year-old, Rob Baldwin of Tustin and his company, Number One Sundae Factory, did all right with a $25 investment. It grew to a $96 profit in a one-day sale of Yo-bars, which are yogurt sandwiches that he personally made. He and his partners also sold regular ice cream sundaes.

Baldwin talked a company into selling him yogurt wholesale and then managed to get the sandwich wafers free from another company. Number One sold 170 Yo-bars at 50 cents each and the rest of the profit came from sundaes.

Baldwin and about 100 other junior and senior high school students got their first entrepreneurial taste by forming businesses for one week at a Chapman College workshop and then held the one-day sale to test their business acumen. Baldwin’s company, which included 10 other students, was named the most unusual. “Owning and running your own business is the only way to go,” said Baldwin, who attends Tustin High and is a member of the football team. “No one tells you what to do if you own your business. You’re the one who makes it or breaks it.”