Abstract: System, method and storage medium loaded with a program are provided for preparing tests in which a certain set of questions may be ordered in different order amongst different copies of the test. There further provided a method for setting different order of answers of a multiple-choice type of test for each question, amongst different copies of the test. Further is provided a method and tool for keeping the decoding key for deciphering and reconstructing the order of the questions and answers within the test itself thus allowing checking the answers and providing statistics on virtually any computer, regardless of the computer on which the test was composed. There is further provided a system and method for processing multiple types of inputs for the questions, such as text, graphics, images, equations and the like.