Below is the score distribution from the course I taught this fall, physics 101 for non-majors (about 200 students total). The black histogram is non-Chinese, the red is Chinese, most of whom, judging by their names, are from PRC. Why was this analysis necessary? Because I noticed the score distribution was very different from previous times I had taught the course. About 20-30 PRC kids scored higher than what is usually the highest score. (Click for larger version.)
Here are two exam problems.
An ant slowly pushes a box of mass .1 kg and coefficient of friction .1 a distance of 10m, moving at constant speed. Calculate the work done.
A satellite orbits the Earth at a distance of 3 Earth radii from the center. Compute its gravitational acceleration.