This study investigates the competencies and support needs of special education teachers in
inclusive settings in order to develop inclusive education manuals. A total of 1,737 special
education teachers in elementary and secondary inclusive schools participated in the survey. The
results were as follows: First, teachers who had more than one student in the self-contained
classroom were a total of 11.3% and those who taught students in full inclusion settings were
54.7%. Second, elementary special teachers scored higher than secondary teachers on the
importance of special teachers’ roles in inclusion as well as their performance levels in
practices. However, there was the importance-performance gap of special teachers based on
their school levels. In addition, all special teachers from elementary to high school levels
commonly showed the low performance level of teaching supports in general classrooms. Third,
the factors impacting on inclusive classroom supports included the perception on the special
teachers’ roles in inclusion and their teaching experiences. Fourth, supports for problem
behavior management, school violence prevention, and sexual education were commonly needed
in all school levels to develop capacities of special education teachers. Fifth, the most needed
support areas for special teachers were related to the disability-awareness and teaching supports
in inclusive classrooms. Considerations and recommendations related to developing inclusive
education manuals for elementary and secondary schools were also discussed.