Despite progress through the Bologna Process, not all master's degrees in Europe are as equivalent as they should be, according to a study released Thursday by the European University Association. The association calls for a renewed emphasis on the "interoperability" of the master's degree, such that students will be able to earn bachelor's, master's and doctoral degrees in different countries. The number of students moving from one country to another for education at different levels, or for employment, is projected to rise in the years ahead, making this work particularly important, the report says.