Schools and education systems are being challenged to improve the evaluation of teacher professional development, yet there is a lack of practical tools for doing so. This article describes the development and validation of a new instrument to assess teachers' perceptions of the impact of professional development. This instrument, designed to be…

The Indicators of Successful Inclusion Scale (ISIS) was developed to measure pre-service and practicing educators' beliefs regarding factors that contribute to educating students with disabilities in general education classrooms. The measure was designed to assess teachers' beliefs and attitudes related to inclusive education and to consider their…