This study examined the ICT integration used by student teachers from a public university during their teaching practices in four high schools in Indonesia. This qualitative inquiry with a case study approach focused on video-based observations and focus group discussions as techniques of data collection. We utilized random sampling for the video-based observation and purposive sampling for the focus group discussion with 60 participants in the discussion and 10 classes in the observation. We organized our analysis and discussion around the field facts and participants' perceptions on the contexts whether or not the integration of ICT was carried out in their pre-teaching practices. Despite the fact that most participants who were student teachers informed that they had good competency levels and experience in the use of technology and believed that technology would have many benefits in improving their teaching performance, the findings of this study showed that they did not integrate ICT in their teaching practices. The major reason for this lack of technology use was the school condition. The findings can be a reference for the importance of a systematic and comprehensive development of method of the teaching practice in the 21st century to help the appropriate transition of student teachers, as they will become professional teachers in the future.