Homework, or a homework assignment, is a set of tasks assigned to students by their teachers to be completed outside the class. Common homework assignments may include required reading, a writing or typing project, mathematical exercises to be completed, information to be reviewed before a test, or other skills to be practiced.
The effect of homework is debated. Generally speaking, homework does not improve academic performance among children and may improve academic skills among older students, especially lower-achieving students. Homework also creates stress for students and their parents and reduces the amount of time that students could spend outdoors, exercising, playing, working, sleeping, or in other activities.
The basic objectives of assigning homework to students are the same as schooling in general: to increase the knowledge and improve the abilities and skills of the students, to prepare them for upcoming (or complex or difficult) lessons, to extend what they know by having them apply it to new situations, or to integrate their abilities by applying different skills to a single task. Homework also provides an opportunity for parents to participate in their children's education. Homework is designed to reinforce what students have already learned.
Homework research dates back to the early 1900s. However, no consensus exists on the general effectiveness on homework. Results of homework studies vary based on multiple factors, such as the age group of those studied and the measure of academic performance.
Among teenagers, students who spend somewhat more time on homework generally have higher grades, and somewhat higher test scores than students who spend less time on homework. Very high amounts of homework cause students' academic performance to worsen, even among older students. Students who are assigned homework in middle and high school score somewhat better on standardized tests, but the students who have 60 to 90 minutes of homework a day in middle school or more than two hours in high school score worse.
Younger students who spend more time on homework generally have slightly worse, or the same academic performance, as those who spend less time on homework. Homework does not improve academic achievements for grade school students.
Low-achieving students receive more benefit from doing homework than high-achieving students. However, schoolteachers commonly assign less homework to the students who need it most, and more homework to the students who are performing well.
In past centuries, homework was a cause of academic failure: when school attendance was optional, students would drop out of school entirely if they were unable to keep up with the homework.
