The purpose of this study was to evaluate the effectiveness of a peer-assisted study session (PASS) program for a large class of Bachelor of Health Science (Paramedic) students. This cohort was made up predominantly of mature aged students who have not undertaken any study for many years. Within a bioscience first-year core subject, student mentees attended PASS sessions on a voluntary basis, with second-year Bachelor of Health Science (Paramedic) students acting as mentors. Mentors were recruited based on their outstanding academic performance in bioscience the previous year and selected based on group and individual interviews. Successful candidates participated in a compulsory 2 days of student mentor training and were supported throughout the program to develop their mentoring skills in both face-to-face workshops and online. Mentee students were allocated to a PASS session with a maximum size of 25 students/group that was facilitated by 2 student mentors. In general, the program was viewed favorably by both mentors and mentees. There was an increase in academic performance and a decrease in the fail rate of the mentee group compared with the cohort of students that did not participate in the PASS program. Importantly, mentees believed that the program improved their study skills and gave them confidence in their approach to studying. This is a significant consideration for the improvement of student transition and retention in a mature aged student cohort. (Contains 1 table and 4 figures.)