These tests bring up some interesting questions, and in turn, create a certain amount of confusion.
Some tests are basic literacy tests.
At my institution students must pass the test before admission to teacher education, not after the fact. However, one might ask why students are initially admitted to colleges and universities who do not have basic literacy skills. In some states, the tests also examine one's knowledge of learning theory, pedagogy, elements of subject matter, and etc. Some areas of these tests should be easily observed during the student teaching experience. Other areas become something like a comprehensive examination prior to graduation.