Colleges and universities have been meeting places of students for the sake of studies all over the world. As students transcend from secondary level education to tertiary level, the degree of freedom increases; they become free to live the style of life they choose. This freedom is mainly caused by their advance in age--from childhood to youth ages. Cohabitation is one of the styles of life that students in most higher-learning institutions choose to live. However, cohabitation is not the style of life that emerges in the recent time. In the industrialized world, for example, cohabitation among youth started a long time ago. By the 1970s and 1980s its rate increased greatly due to secularization and increase in freedom. Being aware of this growing trend in cohabitation, this book surveys the extent of cohabitation among students in higher-learning institutions in Tanzania and how it affects the academic performance of the cohabiting partners. It means that the book assesses both positive and negative effects for this style of life among the surveyed students. Therefore, this book is important to both university and college students so that they can be aware of the positive and negative effects of cohabitation, especially in terms of academic performance. ""This book is an exciting and excellent resource worth reading for everyone interested in issues relating to cohabitation and academic performance. It covers interesting information on cohabitation among students in higher-learning institutions in Tanzania, an issue greatly limiting their academic performance and leading them to indulge immoral values after their graduation. The book is a glittering resource recommendable for social workers, policy decision makers, lecturers, and students in higher-learning institutions in Tanzania and elsewhere."" --Josta Lameck Nzilano, Lecturer in the Department of Educational Psychology and Curriculum Studies, Dar es Salaam University College of Education, Tanzania Elia Shabani Mligo (PhD, University of Oslo, Norway) is Senior Lecturer at Tumaini University Makumira, Mbeya Teaching Center in Tanzania. Some of his recent books include: Introduction to Research Methods and Report Writing (2016), Writing Effective Course Assignments (2017), English as a Language of Teaching and Learning for Community Secondary Schools in Tanzania (2017), and Community Secondary Schools in Tanzania (2018). Jael Omanga Otieno (BA Ed., Tumaini University Makumira) teaches at Iganduka Secondary School in Mbozi, Songwe, Tanzania.