On practice (opinion)

Ogden Lindsley (1992) contrasted the emphasis on practice in American sports with the neglect for practice in American schools. Whereas fluency researchers have suggested that at least 70% of instructional time be devoted to skill practice, the pressure on teachers to move rapidly through a curriculum results in children receiving only brief exposure to a wide variety of skills, few of which are practiced to mastery (Binder, 1996).

Daly, E., Marten, B., Barnett, D., Witt, J., Olson, S. (2007). Varying Intervention Delivery in Response to Intervention: Confronting and Resolving Challenges with Measurement, Instruction and Intensity. School Psychology Review, 36 (4), p. 562-581