PhotoYou might think that taking an extra day off from school each week would hurt student performance, but a study finds that the opposite is the case.

Researchers at Georgia State University and Montana State University found that shortening the school week to four days has a positive impact on elementary school students' academic performance in mathematics.

"What interested me about our results is they were completely opposite to what we anticipated," said Mary Beth Walker, dean of the Andrew Young School of Policy Studies at Georgia State. "We thought that especially for the younger, elementary school kids, longer days on a shorter school week would hurt their academic performance because their attention spans are shorter. Also, a longer weekend would give them more opportunity to forget what they had learned."

Although the shortened school week did not have a measurable impact on reading outcomes, "the idea that the change in the calendar did not have negative effects we thought was an important result," Walker said.

The study, published in the journal Education, Finance and Policy in July, analyzed the impact of a four-day school week on student achievement by comparing fourth-grade reading and fifth-grade math test scores from the Colorado Student Assessment Program (CSAP) for students who participated in a four-day school week, versus those who attended a traditional five-day school week.

Could cut costs

The study suggests there is little evidence that moving to a four-day week compromises student academic achievement, an important finding for U.S. school districts seeking ways to cut costs without hampering student achievement.

A number of school districts 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 and transportation costs.

Four-day weeks have been in place for years in rural school districts in western states, particularly in Colorado, New Mexico, and Wyoming. Over one-third of the school districts in Colorado have adopted a four-day schedule. The alternative schedule has also been considered in school districts in Oregon, Missouri, Florida, and Georgia.

The four-day school week requires school districts to lengthen the school day to meet minimum instructional hour requirements.

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