The purpose of this quantitative study is to analyze data around school culture and climate during the authorization process of the International Baccalaureate Diploma Programme. Data collected was analyzed to test the hypothesis that the authorization process serves as a "weeding out" of students by causing a significant difference to…

ifferent evaluation models were applied to data from a high school career education program to investigate problems in statistical conclusion validity and program effectiveness judgments. If potential threats to internal validity are analyzed and protection strategies are developed, more confidence in unplanned ex post facto design using a…