Your situation is difficult to understand without more information that should include a sample of test essay responses written by you.
This is a common occurrence among law students because the first year tests require not only understanding of the material, but also using it in a logical and analytical manner. But you are not in law school.
What are you studying in college ? How did you perform in high school & on standardized tests ? Are you doing poorly on essay questions, multiple choice questions or both ? Do you suffer from test anxiety ?