Theory test organized in schools

As I was reading todays newspaper I have come across an interesting article. It was about an experiment held in one of our local high schools. In this particular school, special Theory test was prepared for students to solve during their lessons. The computers were located in the halls where every student was supposed to take the test. Of course there was no need to convince them to do it as everyone was interested (mainly due to the fact that they were able not to go to lessons at the time). It was a standard theory test the same that one may encounter at real exam. What was the point of this experiment? Well the scientists wanted to find out what is the chance of passing the test without preparation. Due to the fact that it is a multiple-choice test there is always a threat of guessing the answers. Researchers wanted to find out whether it is really possible to pass the test in this way. What were the results? Well it appeared so that few students were able to pass the test. But as it turned out later they were interested in cars and driving license so we cannot say they had no idea what answers they were choosing.