General education teachers are increasingly required to take responsibilities to understand students
with disabilities and inclusive education. The purpose of this study is to examine the effects of a
mandatory course: introduction to special education on pre-service general education teachers'
perceptions about inclusion and implementation of instructional adaptations for students with
disabilities. In order to investigate the changes in their perceptions on those areas, a total of 55
pre-service teachers participated pre and post survey questionnaires at the beginning and the end
of course. The results showed that their perceptions based on inclusive education knowledge and
comprehension were positively changed after taking the course. Likewise, their perceptions on
implementation of instructional adaptations were significantly improved. Especially, they were
competent to implement instructional adaptations down to instructional environment, grouping,
instructional methods, assessment, and instructional contents. In addition, the differences on their
perceptions by their pre-experiences of inclusive classrooms were not statistically significant, while the
interests about inclusion were significant in pre-perceptions about inclusion. Based on these findings,
plans and directions for future professional development programs for pre- and in-service teachers
were discussed, and limitations of the study and implications for future research were provided.