In this unit we realize all the work the teacher has to do at the time to make a test. It is not only that the teacher sits down and make a test, that sounds very easy, but as the unit went through, we comprehend all the different aspects the teacher needs to consider at the time of making one. A test is very important to help us to measure the students skills, but before we need to make sure that a test is valid, that it needs to have a purpose, and one of the major things to consider, is to make instructions very clear, to avoid any confusion in them, because it happens when we as students, do not understand many of the indications a test has. The test help us, as well as the students, to know in which areas they are improving and which ones are not so good.