That statistic grossly under represents the huge amount of work that most teachers put in outside the school day (preparing class materials, marking papers, etc).

ECONOMIST: Letters

In preparing these materials, we have relied upon and assumed without independent verifications, the accuracy and completeness of all information available from public and internal sources.

FORBES: Stock Market Logic

Teachers received practice tests aligned with the Common Core last summer and fall so they could begin preparing their students, but many districts don't yet have the necessary books and materials to teach them.

WSJ: Some NY parents to boycott new, harder state tests

For example, if your business involves putting together packets of information for clients, maybe you have one station specifically for printing, and another that has all the hole punches, staplers, folders, and other assembly materials, and still a third station for preparing outgoing mail.

FORBES: 5 Elements of a Highly Productive Office