Dr. Kalman is the best! He gives clear lectures and example problems that will help you in his exams. Averages are at the 50s-60s in his exams, but he gives a huge curve at the end. I got an F, a C, and a D in his exams/final which totals to a 73. With the curve, I got a B. Understanding the concepts and problems are key for you to get an A.