This book contains a study that investigated the influence of quality assurance mechanisms (Course Design, Teaching and Learning, Assessment and Evaluation, Student Support Services and Environmental Infrastructure) on learning effectiveness of Learners in Distance Learning Centre, University of Ibadan. This book contains the end result of the study was to determine the extent to which quality assurance mechanisms (Course Design, Teaching and Learning, Assessment and Evaluation, Student Support Services and Environmental Infrastructure) influence learning effectiveness of Learners in Distance Learning Centre, University of Ibadan, to assess the relationship between each of the assurance mechanisms to the delivery of qualitative on learning effectiveness of learners in the Institution, ascertain the level of difference in the impact of each of the quality assurance mechanisms on learning effectiveness of learners in the institution and to find out the absolute and relative effect of each of the quality assurance mechanisms on learning effectiveness of learners in the institution.