"This highly valuable volume is a solid foundation from which we can develop international tests-since its authors and advisers have leading roles in international assessments ... . It is an excellent book that will probably better serve researchers and even school administrators. The principles and applications it guides us through will be of great use to many and will certainly serve as food for thought for many audiences of educational stakeholders all over the world." (Jesus Garcia Laborda, British Journal of Educational Technology, Vol. 46 (4), 2015)