<p>Also, I would like to know a lot more about Wash.U.'s class environments, including competitiveness for getting an A (I do not want to be in an environment like UC Berkley or JHU; I prefer schools like Brown or Harvard because it is relatively easier to maintain good GPAs), professor teaching skills, whether I can get to know with professors, and get good letters of recommendation (if I perform well, at UCs even if you do well, it is harder to interact with professors), etc. I would appreciate if you give me some actual examples.</p>