An adapted alternating treatments design was used to evaluate and compare the effects of two group contingency interventions on mathematics assignment accuracy in an intact first-grade classroom. Both an interdependent contingency with class-average criteria (16 students) and a dependent contingency with criteria based on the average of a smaller,…

Professional Development Schools (PDS) have become a widely used vehicle for the educational and professional development of both preservice and in-service teachers. Three key stakeholders are generally identified in the research about PDS--preservice teachers, experienced teachers, and K-12 students. The purpose of this research was to examine…