Although school and education system leaders can mandate teachers' participation in professional development activities, various school-related, teacher-related and student-related factors influence the degree to which professional development opportunities ultimately result in the desired teaching and learning impacts. This study examined…

Although the Universal Design for Learning (UDL) Framework has been effective in designing tools and lessons, implementation of the Framework to design entire learning environments possesses its own limitations in research. This paper describes a quasi-experimental study of the effects of a professional development program on teachers'…