Reviews of professor Xin Dong

Rating: 4.0/5, difficulty: 4.0/5
He is a good professor. The tests are difficult but if you understand the harder HW questions you will be fine. People complaining probably did not put the time in to understand the concepts. It is very doable to get a good grade but you have to work for it. He is willing to help those who ask, I really like this class and am doing good so far.

Rating: 1.0/5, difficulty: 4.0/5
He reads directly from the textbook for his lectures, as if treating them as review sessions and that his students already know the material. Quizzes/midterms are quite poorly written and do not accurately reflect the lecture and material.

Rating: 1.0/5, difficulty: 4.0/5
I loved calculus in high school, but taking this class sucked every last ounce of joy I had out of calc. He teaches by vaguely pointing at the textbook and is very cold and avoidant of our questions if they're deemed as "stupid" to him. Only take this class if you're a fast and individualistic learner with strong prior knowledge in calc.

Rating: 1.0/5, difficulty: 4.0/5
I was genuinely looking forward to being able to take calculus, because I enjoyed the subject. However, Professor Dong has crushed any of my enjoyment and stripped away any confidence in the subject I had. He is actively trying to make things harder and his tests are written so weirdly (testing more on if you know different variations of an answer)

Rating: 1.0/5, difficulty: 4.0/5
He just reads off the textbook and gives no additional input. Get ready to self-study calculus with YouTube videos as his lectures are absolutely useless.