This study investigates the probation service system on a theoretical level and its’ efficiency in the view of juvenile offenders on a practical level. In this qualitative research, we made semi-structured interviews with 10 youthful protegees and 15 underaged from the reformatory, who has already been part of the probation system. We discuss parts of the research that are adequate on the subject of the study. Based on the interviewees’ experiences of the probation service we tried to collect suggestions to increase the efficiency of the probation service.