Regional Educational Laboratory (REL) Appalachia has conducted a systematic review
of research on the effects of increased learning time on student
achievement in US schools (Grades 2 to 10, equivalent to Key Stages 2
to 4). Increased learning time programmes offer students additional
instruction beyond the regular school day in English, maths, and other
REL screened 7,000 studies and found 30 that met
their inclusion criteria. Results were mixed and showed that
achievement depended on types of students targeted, the setting, and
the features of the programme implemented. Overall patterns noted were:
Increased learning time programmes improved academic motivation.
Gains were dependent upon type of instruction and instructor qualifications.
Increased learning time had a large positive effect on struggling students.
Source: What Does the Research Say About Increased Learning Time and Student Outcomes? U.S. Department of Education. Retrieved from http://ies.ed.gov/ncee/edlabs