This naturalistic study focused on the perceptions of leadership and student performance in science from campus leaders in three purposefully selected secondary campuses of ninth through twelfth grades. Each school had experienced an improvement in student passing rates on the science TAKS test that exceeded the state's percent improvement in…

This ethnographic case study examined the roles of district and school macro-culture and teacher sub-group micro-culture in influencing the nature and extent of teachers' professional collaboration. Informed by the sociocognitive theory that learning is rooted in social relationships and develops through interpersonal discourse and activity, the…