On that test, it is possible for everyone to get enough answers right to pass, if they learn the information. If the driver's test were used to sort or rank people, it would have to include some questions not everyone would get right. A close look at these kinds of questions shows that they may have more than one answer which many people would consider correct. This kind of question could trip up many students, including those from cultures strongly identifying wisdom with age. Test scores are an estimate, they are not exact.
Every test has a margin of error.
Different versions of the test, the number of questions on the test, simple mistakes like filling in the wrong bubble, or even a child's mood on a given day can affect his or her score. One wrong answer on these tests can make the difference in whether your child is promoted or retained. 6 CPS signed an agreement with Riverside Publishing Company to use the ITBS and TAP tests. This agreement states that CPS will not label students based on a single test score. The ITBS and TAP test manuals state clearly that it is inappropriate to use ITBS results to decide to retain students at a grade level.