Self-efficacy is an important construct for CS teachers' professional development, because it can predict both teaching behaviors as well as student outcomes. Research has shown that teachers' self-efficacy can be as influential as their actual level of knowledge and abilities. However, there has been very limited research on CS teachers'…

This mixed-methods observational study analyzes Advanced Placement (AP) Biology teachers' engagement in microblogging for professional learning. Data from three hashtag-based Twitter communities--#apbiochat, #apbioleaderacad, and #apbioleaderacademy (121 users; 2,253 tweets)--are analyzed using educational data mining, qualitative two-cycle…

From 2012-2015, Advanced Placement (AP) science courses underwent a large-scale curricular reform to include more scientific inquiry and reasoning, reduce emphasis on broad content coverage, and focus on depth of understanding, with corresponding changes in high-stakes AP examinations. In this study, we explored how teachers prepared for and…

This empirical study analyzed data from 638 teachers and 11,800 students in low-socioeconomic status (SES) urban schools (and schools with urban characteristics) exploring associations of school, teacher, teaching, and professional development characteristics toward student performance on the revised Advanced Placement (AP) Biology and AP…

This empirical study examined teacher self-reported participation (using or not using) and engagement (posting or lurking) in the online Advanced Placement (AP) Teacher Communities (APTC) coinciding with the redesigned AP Biology, Chemistry, and Physics exams and curricula. Prior analyses indicated that APTC participation has positive, direct…