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Download full textWELCH, WAYNE W.; AND OTHERS – 1967
MEMBERS OF THE EVALUATION SECTION OF HARVARD PROJECT PHYSICS, DESCRIBING WHAT IS SAID TO BE THE FIRST ATTEMPT TO SELECT A NATIONAL RANDOM SAMPLE OF (HIGH SCHOOL PHYSICS) TEACHERS, LIST THE STEPS AS (1) PURCHASE OF A LIST OF PHYSICS TEACHERS FROM THE NATIONAL SCIENCE TEACHERS ASSOCIATION (MOST COMPLETE AVAILABLE), (2) SELECTION OF 136 NAMES BY A…
Descriptors: Control Groups, Evaluation Methods, Experimental Groups, National Surveys
Peng, Samuel S.; And Others – 1977
A group of high school self-reported dropouts and a group of simulated high school dropouts were compared with graduates in their participation rates, efforts required for data collection, and the overall quality of their responses in the National Longitudinal Study of the High School Class of 1972. The results indicate that dropouts are less…
Descriptors: Attrition (Research Studies), Comparative Analysis, Data Collection, Dropouts
Williams, Stephen R.; Folsom, Ralph E., Jr. – 1976
As in any very large survey, the sample that provided data for the National Longitudinal Study of the High School Class of 1972 (NLS) differed from the random sample of the study design because of nonresponse from 226 of the 1,200 schools in the primary sample, and a small amount of other missing data. Part A of this report, briefly describes the…
Descriptors: Attrition (Research Studies), Followup Studies, Graduate Surveys, High School Graduates
