Waiting for the weekend can often seem unbearable, a whole seven days between Saturdays. Having seven days in a week has been the case for a very long time, and so people don’t often stop to ask why.

But for much of America’s 250-year history, eight-hour work days and five-day workweeks were a pipe dream. The regular ...

Just over half the states in the U.S. have schools that operate on a 4 day/per week schedule. Their numbers continue to climb. It's an effort by schools to attract and retain teachers.