The University evaluates the material covered on each AP test to determine how the content lines up with the content of the courses offered here at U of I. For example, you can see that, depending on language, a 5 on an AP foreign language test could yield 8-13 hours of credit depending on the language and test. This range is due to the differences in the material covered on each individual AP exam and the content of courses here at Illinois. The content of some AP tests may cover a portion of the material from additional courses at U of I; however, that portion was not great enough for the AP score to be equivalent to such courses.
Further questions can be directed to your academic advisor, who will help determine your next appropriate Spanish course.