biostudies-literatureThompson PNNICHD NIH HHSNIGMS NIH HHS527-539https://www.ebi.ac.uk/biostudies/studies/S-EPMC9642983biostudies-literatureUnknown30(5)Four-day school week schedules are being adopted with increasing frequency, particularly in rural areas. In this paper we consider the academic implications of students in Oregon attending a four-day school week for the first time when they enter high school. We find 11^th grade math achievement in 0.09 standard deviations lower among four-day school week students, with significant impacts driven by four-day school week students in non-rural settings. We also find a greater number of four-day school week students being classified as chronically absent. Finally, we find reductions in on-time graduation among four-day school week students compared to five-day students.Education economicsImpacts of the Four-Day School Week on High School Achievement and Educational Engagement.PMC9642983P20 GM104417R21 HD102693Gunter KBTomayko EJThompson PNSchuna JfalseImpacts of the Four-Day School Week on High School Achievement and Educational Engagement.Four-day school week schedules are being adopted with increasing frequency, particularly in rural areas. In this paper we consider the academic implications of students in Oregon attending a four-day school week for the first time when they enter high school. We find 11^th grade math achievement in 0.09 standard deviations lower among four-day school week students, with significant impacts driven by four-day school week students in non-rural settings. We also find a greater number of four-day school week students being classified as chronically absent. Finally, we find reductions in on-time graduation among four-day school week students compared to five-day students.2022-01-01T00:00:00Z20222025-04-21T15:16:09.881Z2025-04-21T15:16:09.881ZS-EPMC96429833638649310.1080/09645292.2021.2006610