It is often argued that changes in curriculum have implications for assessment and vice versa. IT can be used to enhance existing (standardized) testing practices by making tests more adaptive to serve diverse needs. In addition the use of information technology in the curriculum often aims to contribute to the mastery of complex cognitive skills, which cannot be determined by means of simple, standardized tests alone. IT offers a range of new possibilities for assessment, such as the use of multimodal representations, digital portfolios and simulations. In addition IT is also a new knowledge domain in itself that needs to be assessed. This chapter will synthesize research on the potential of IT to change assessment practices as well as examine the consequences of increasing use of IT in the curriculum for the assessment of student learning.