Using data collected from two multiyear teacher professional development projects employing randomized control trials, this study describes the development and validation of a paper-based test of elementary teachers' science content knowledge (SCK). Evidence of construct validity is presented, including evidence on internal structural…

This study investigates the validity of the Diagnostic College English Speaking Test (DCEST) in the context of EFL teaching and learning in China. The experiment was conducted in three stages over the course of eight weeks at a national key university in China. By means of test administration and questionnaire survey, the researcher gathered…