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Download full textZoblotsky, Todd; Ransford-Kaldon, Carolyn; Morrison, Donald M. – Society for Research on Educational Effectiveness, 2011
The present paper describes the recruitment and site selection process that has been underway since January 2011, with particular emphasis on the use of Mahalanobis distance score to determine matched pairs of sites prior to randomization to treatment and control groups. Through a systematic winnowing process, the authors found that they could…
Descriptors: Science Instruction, Educational Change, Research Methodology, Site Selection
Clotfelter, Charles T.; Ladd, Helen F.; Vigdor, Jacob L. – National Center for Analysis of Longitudinal Data in Education Research, 2007
Education researchers and policymakers agree that teachers differ in terms of quality and that quality matters for student achievement. Despite prodigious amounts of research, however, debate still persists about the causal relationship between specific teacher credentials and student achievement. In this paper, we use a rich administrative data…
Descriptors: Credentials, Class Size, Teacher Characteristics, Academic Achievement
Elks, Ann Pharr – 1987
This practicum was designed to increase and expand the use of an environmental education center available in the Bladen Lakes State Forest in Elizabethtown, North Carolina. The immediate goal was to provide teachers with a new awareness of the offerings and availability of the site to increase the likelihood of participation with students. The…
Descriptors: Conservation Education, Conservation (Environment), Ecology, Elementary Education
