Source: Christopher Connell, The Hechinger Report (CNNMoney.com) ( Free Registration )

Arianna Suarez's first job after emigrating from Cuba as a teenager was as a cashier at a Walmart in Hialeah, Fla. Thanks in part to college-level classes that Walmart offers online, she has risen through the ranks to store manager and is now on her way toward earning a college degree.

From ethics to inventory management, the classes covered the skills Suarez needs to help run a round-the-clock, multi-million dollar retail operation with scores of employees. Even better, she has earned dozens of credits that she can put toward a bachelor's degree.

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