SAT test killing esteem?

OK, let's get one thing straight. First off, I am a college student who was offended from a past event. I am out of high school.I am a math major in my college and I am currently taking calc III. I was enjoying the math cl until my professor started slandering on students who score low on the SAT. He saw that it would be okay to humiliate students who score low on SATs since this was a calc III course. People generally taking the course have high SATs. So he cracked a joke and made fun of people who have scored below 500 on SAT Math. "The math can't get easier on the SAT; those who score below 500 are idiots beyond morons," were his words. Everyone in cl started laughing except me. I was probably the only one sitting in the cl with a 420 score in math. I couldn't take notes in cl and after a few minutes I just walked out. I am shaken up by what happened. I do have a B+ thus far in the cl, but maybe I should retake SAT for my well-being. Need some advice..ty.