Virtual Exchange (VE) in higher education often involves small, online working groups who meet outside of class time. This lack of teacher presence in the meetings has its advantages (e.g. more student-centred, more autonomous environments); however, it also presents challenges for assessment. This chapter introduces an online platform called TEAMMATES and briefly describes how it has been used for continuous peer assessment in an ongoing VE between two university classes in language teacher education. [For the complete volume, "Assessing Virtual Exchange in Foreign Language Courses at Tertiary Level," see ED624433.]