This study aims to examine the perceptions of Korean pre-service elementary school teachers about education using technology on the basis of their self-efficacy and the challenges they may face when during the class. For this, 120 participants completed a survey including twenty closed-ended questions and one open-ended question. It was found that overall, the participants seem to feel comfortable in using technology in classrooms while they are not confident to appropriately use computer terminology and to evaluate proper software for teaching and learning. Concerning challenges, teacher-related, students-related, and other types of difficulties including technical issues were explored.