The study was conducted under the assumption that teacher learning community is
effective in changing teacher-efficacy and professionalism. Online education teachers are
required to possess different professionalism from other general teachers as the online
classes are taken by students with health impairment, the special education recipients.
Therefore, the teacher learning community was used in order to improve the professionalism
required for online teachers. The objectives of the study were to seek changes in teacherefficacy
and professionalism of the participants brought by the medium of learning
community, and also to seek specific factor that brings such changes. In order to achieve the
goal, teacher learning community was grouped with online teachers who teach students with
health impairment and, with the application of grounded theory, a case analysis was
conducted on the process of character education development that can be applied on online
education system. As a result of the analysis, the participants were revealed to have
improved their ability in skills, knowledge and attitude which are important parts of
professionalism required by online teachers. It was developed by participating in the
reconstruction process of online system through the customized character education for
students with health impairment. Each participant shared their personal tacit knowledge and
information through learning community activities and with the help of discussion activities,
they started to practice the strategies of class improvement in their educational environment.
The participants also had an opportunity to have time for discernment on the role of online
teacher by writing reflection journals on their teaching, disclosing and discussing them with
the members of the learning community. With these activities, teacher-efficacy of participants
were also enhanced. Thus, if the learning community activity conducted with online teachers
starting from single case study proceeds systematically with policy and financial supports, it
is highly considered that the activity will play an important role in enhancing the quality of
education for students with health impairment.