Byung Gyun S.

Hi, I am a STEM educator with over 25 years of teaching experience specializing in advanced Mathematics (AP Calculus AB / BC, AP Statistics) and Science (AP Chemistry, AP Physics 1). and I also have been tutoring standardized tests such as SAT Math, ACT Math/Science, ISEE Math all levels, GRE Math, etc. I hold a Master's degree in Mechanical Engineering from University of Southern California (USC). I am a best-selling author of over eight STEM textbooks, topped Amazon’s “#1 New Release”