A Florida law requires students -- beginning with this year's freshmen class -- to take an online class before they can graduate high school. Online education is cheaper than its brick-and-mortar equivalent and supporters say there are other benefits, such as the access to a wider range of class subjects. However, critics worry that as online learning grows, unmotivated students will suffer and students' social lives will take a hit. One challenge: Many families do not have home computers.

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