Today, probably more than in any other time, teachers are giving their students less and less homework. This is happening not because teachers believe less in giving assignments, but rather because teachers are finding that many students are not completing them.
Usova, G. M. (1976). Making Effective Classroom Assignments. Reading Horizons, 17 (1). Retrieved from http://scholarworks.wmich.edu/reading_horizons/vol17/iss1/11