Dr Paul Rijken is principal of Cardijn College, a Catholic secondary co-educational school (7-12) in the southern region of Adelaide with a total of 1120 students and 140 staff. Marcellin is a campus of Cardijn College. It provides students in Years 10 to 12 with SACE, training and apprenticeships. It has an enrolment of over 155 students and 30 staff. Paul has been the principal at Cardijn College since 2005. He has a Ph.D. from Curtin University in Science and Mathematics Education. He is a Fellow of the Australian College of Educational Leaders.