Education reorientation towards the electronic, computerized environment naturally leads to transferring evaluation activities to the same environment. Beside the general trend of the society, use of Computer Aided Assessment is also required by other objective factors. Among them we have the huge raise in student numbers leading to the need to test and evaluate many students in a short time, in a coherent manner, while the numbers of the personnel administering the testing did not raise or raised much slower. Computers can perform this task removing any suspicion of subjective evaluation. Downside of this is that computers are machines that perform preprogrammed tasks. They lack the ability to understand free answers therefore testing has to be redesigned in a compatible manner. Also, some algorithms should be implemented to prevent and detect wrongful conduct from those undertaking tests.