If the score to be able to measure the ability of a person is really good, but in reality, what cannot be measured at all points, if there are still people who are not faithful in the classroom.
If the score in the test can measure a person's ability to be a really good story. But in fact, the rate can not measure anything if there are dishonest people in the classroom.
If the score on the exam can measure the ability of a person really is a good thing. But in fact the score cannot measure anything if there is dishonest in classrooms.