Homework may not boost all students' test scores
More math homework may help top students as well as those who struggle, but average students may reap less benefit from additional assignments when it comes to improving test scores in the subject, according to a new study. Only roughly 40% of students who were observed in the study would benefit in a significant way from an additional hour per night of homework, the researchers concluded.
Henderson, D., & Eren, O. (2008). The impact of homework on student achievement. Econometrics Journal, 11(2), 326-348.