A number of schools in the United States have moved from the traditional Monday through Friday schedule to a four-day week schedule as a cost-saving measure to reduce overhead (经费) and transportation costs. Four-day weeks have been in place for years in rural schools in western states, particularly in Colorado, New Mexico and Wyoming. Over one-third of the schools in Colorado have adopted a four-day schedule. The alternative schedule has also been considered in schools in Oregon, Missouri, Florida and Georgia.

　　The researchers have speculated (推测) on why the shortened school week positively affected students but there are not enough data to draw definite conclusions. “ We thought that a four-day school week lowered absenteeism (旷课), so students who had dentists’ appointments or events might be able to put those off until Friday and not default school.” Walker said.

　　?My own personal guess is teachers liked it so much—they were so enthusiastic about the four-day week—they did a better job. There’s some evidence in other labor studies that four-day work weeks improve productivity.” Walker notes the results are only applicable to smaller and more rural schools. Further studies should be performed to understand the effects on urban schools, she said.

　　8. What can we know about the study?

　　A. It showed moving to a four-day week would hurt students’ academic performance.

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