3 exams total. I liked this class! There are 3 exams & the 3rd exam is the final which isn't cumulative. He writes a basic outline on the board about what he's going to lecture & the exams are exactly like the lectures, handouts & book. No hw, just 3 exams! He's open to questions & help if you ask! Highly recommend! He is a little dull with the tone he uses in lecture, but he is a really nice and helpful professor. I learned alot in his class and he curves, so the grading scale was fair. Just make sure to attend each lecture and read the book because notes from lecture and the book are on the exam. I would recommend his class.