That's only true for introductory and some algorithms courses. After that, it diverges mostly into C and a bunch of custom languages, such as MATLAB for theoret

That's only true for introductory and some algorithms courses. After that, it diverges mostly into C and a bunch of custom languages, such as MATLAB for theoretical courses. I go to CMU and I haven't really touched Java since freshmen year. But upperclassmen CS is still done in C majorly. Yes, MIT shifted to Python for intro level CS classes. CMU is doing that following this fall.