All rights reserved. No part of this publication may be reproduced or transmitted, in any form or by any means, without permission. Cover: Hanne Baadsgaard Utigard. Print production: Reprosentralen, University of Oslo. A Acknowledgements I am eternally grateful for the thorough, patient, and insightful supervision provided by Professor Joron Pihl, and the many interesting discussions we have had during the long journey towards completion of this PhD thesis-you always made me believe in the importance of the project and helped me stay intellectually sharp throughout the whole process. I am also grateful for the thoughtprovoking and useful comments by Professor Leif Lahn along the way, especially in relation to methodology. Thanks to all the informants who opened up their professional practices and shared their thoughts and opinions with me. Thanks to the Professors and fellow PhD candidates at the National Graduate School in Educational Research (NATED) for the academic and the not-soacademic activities that made the PhD journey both educationally stimulating and a lot of fun! I want to express my gratitude to Oslo Metropolitan University for funding this work. Thanks to my colleagues and friends at the Faculty of Education and International Studies for your willingness to collaborate, for our stimulating conversations, for all the good laughs, and for just putting up with me every day. Last, but not the least, my deepest gratitude goes to my parents, and to Sigrun for being the best mother to our beloved children, Julia and Jonas, and for allowing me to spend countless of hours, days, and even weeks, months and years to complete this work.