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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

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Keeves, John P.; Hungi, Njora; Afrassa, Tilahun – Studies in Educational Evaluation, 2005
This article traces the evolution of a quest for solving the problems involved in the analysis of multilevel data and the estimation of the value added effects of schools in influencing educational outcomes. The authors report the findings of two studies that followed several cohorts of students that were tested at two grade levels (Grade 3 and…
Descriptors: Program Effectiveness, Grade 5, Grade 3, Scaling