International Teaching Assistants are (largely) Chinese, Indian, and Korean biology, chemistry, math, and physics graduate students in the U.S. and Canada who are supported by teaching undergraduate courses in their areas of study. In 2010, their numbers increased to 242,061 in the U.S. and they comprised 15.5% of all graduate students. Many undergraduate science, math, and engineering courses are taught by ITAs. Indeed, ITAs make undergraduate education...