This chapter presents the development of a computer assisted intelligent assessment system. The system is based on the IMS QTI standard and designed by applying the Model Driven Architecture (MDA) software engineering standards, the artificial intelligence and description logic reasoning techniques based on tableau algorithm. The chapter, also, shows the use of metamodel transformations between concrete languages. We propose the framework for assessment system that is reusable, extensible, and facilitates interoperability between its component systems. Also the chapter defines the consistency of test.