Yes, it is recommended that everyone take the exam. Students who have taken Statistics or Calculus AB or BC exams must submit their test scores by July 1 to potentially place into a higher course.

A high score on the Calculus AB exam will generally earn a student three to five college credits, depending on a college's policies. AP Calculus BC has the same prerequisites as AP Calculus AB but ...

Note that if you end up scoring 3 or lower, then you will need to pass the CRE to take Math 11/30/35. I took the AP Calculus AB exam If you are quite sure you will score a 4 or 5 on the AP Calculus AB ...