Earlier quoted context omitted.
Yes, but if a test is designed to be taken with a calculator, not bringing one is an invitation to disaster (especially if the test is timed), because the arithmetic is probably not designed to be easy. I once forgot a calculator in my discrete math class and ended up having to do long division in the test margins.
Believe me I've been there before. My point was rather that I think the person who was giving the test was wrong to offer that students use calculators.
AP Exams/Courses are offered in many subject areas and each have very strict guidelines (like which calculators to allow), which are dictated to the instructor by the College Board.
[1] http://en.wikipedia.org/wiki/AP_Calculus#Exam [2] http://en.wikipedia.org/wiki/College_Board