All incoming freshmen must take the ALEKS PPL Math Placement Exam. There are no exceptions. If you are a freshman, you need to take the math test.
Transfer students, though, are in a different situation. If you already have transferred credit for Calculus I, you don't need to take the ALEKS PPL Math Placement Exam. If you don't plan to enroll in Calculus I for your academic program requirements, you don't need to take the ALEKS PPL Math Placement Exam. However, if you do plan to enroll in Calculus I or in a lower-level math course (e.g., precalculus or algebra), then you must take the math test. If you are not sure whether you will take a math class at Illinois, we encourage you to take the math placement test, especially if you are planning to go into engineering or any program requiring math.
Whether you should take the EPT, a science placement test, or one of the "language other than English" (LOTE) placement tests will depend on several factors, including your academic background, the college you are entering, and any transferable credit you earned elsewhere.