The Enduring Effects of Small Classes
- 1 April 2001
- journal article
- Published by SAGE Publications in Teachers College Record: the Voice of Scholarship in Education
- Vol. 103 (2), 145-183
- https://doi.org/10.1111/0161-4681.00112
Abstract
The purpose of this investigation was to extend our knowledge of the effects of small classes in the primary grades on pupils’ academic achievement. Three questions were addressed that have not been answered in previous research: (1) How large are the effects of small classes relative to the number of years students participate in those classes? (2) How much does any participation in small classes in K–3 affect performance in later grades when all classes are full-size? (3) How much does the duration of participation in small classes in K–3 affect the magnitude of the benefits in later grades (4, 6, and 8)? Rationales for expecting the continuing impacts of small classes were derived in the context of other educational interventions (for example, Head Start, Perry Preschool Project). The questions were answered using data from Tennessee's Project STAR, a statewide controlled experiment in which pupils were assigned at random to small classes, full-size classes, or classes with a full-time teaching assistant. Hierarchical linear models (HLMs) were employed because of the multilevel nature of the data; the magnitude of the small-class effect was expressed on several scales including “months of schooling.” The results for question (1) indicate that both the year in which a student first enters a small class and the number of years (s)he participates in a small class are important mediators of the benefits gained. The results for questions (2) and (3) indicate that starting early and continuing in small classes for at least three years are necessary to assure long-term carryover effects. Few immediate effects of participation in a class with a full-time teacher aide, and no long-term benefits, were found. The results are discussed in terms of implications for class-size reduction initiatives and further research questions.Keywords
This publication has 20 references indexed in Scilit:
- The Long-Term Effects of Small Classes: A Five-Year Follow-Up of the Tennessee Class Size ExperimentEducational Evaluation and Policy Analysis, 1999
- The Political and Institutional Origins of a Randomized Controlled Trial on Elementary School Class Size: Tennessee's Project STAREducational Evaluation and Policy Analysis, 1999
- Grade Equivalent and IRT Representations of GrowthJournal of Educational Measurement, 1997
- Long-Term Effects of Early Childhood Programs on Cognitive and School OutcomesThe Future of Children, 1995
- Is the Perry preschool better than head start? Yes and noEarly Childhood Research Quarterly, 1994
- Money Does Matter Somewhere: A Reply to HanushekEducational Researcher, 1994
- Carry‐over effects of small classesPeabody Journal of Education, 1989
- THE CHOICE OF SCALE FOR EDUCATIONAL MEASUREMENT: AN IRT PERSPECTIVEJournal of Educational Measurement, 1986
- Response to HooverEducational Measurement: Issues and Practice, 1984
- Response to compatriot and foreigner who seek assistance.Journal of Personality and Social Psychology, 1968