The 4-day school week can save school districts a substantial amount of money, but has demonstrated no improvement on student learning. It can also provide teachers with additional time for professional development.
While some school districts have saved hundreds of thousands of dollars by switching from a 5-day to a 4-day school week, the Education Commission of the States found that budget saw savings of only 0.4 to 2.5 percent.
The longer school day can be taxing on students, which can be the reason why there are varying results on how the 4-day week impacts their ability to learn. Most experts recommend that school districts should not base their decision to convert to a 4-day work week on test results alone.