This study focused on changes in the self-efficacy of 48 men and women pre-service teachers in a Thai computer Teacher Education program. Their self-efficacy levels were measured before and after attending the Pre-service Teacher Support System (PTSS). A shorter version of the Teacher Sense of Efficacy Scale and assessment of the desire to become a teacher were used to collect self-efficacy, PTSS questionnaires, logbooks, and interviews. PTSS is a program developed to assist students with self-efficacy, motivation, and the desire to become teachers. The results show a statistical increase in self-efficacy. The PTSS program designed for pre-service teachers to exchange teaching experiences and techniques they gained during practicum training. The PTSS has resulted in an increase in self-efficacy after attending PTSS sessions with personalized implications, which indicated the support system could help student teachers.