Columbia University has no college of education. Only teachers' colleges and continuing education colleges. The former is a normal college, with undergraduate and postgraduate students and doctors, while the latter is a certificate training for on-the-job personnel and some master's majors.

Your classmates should go to the normal college. It doesn't matter if the grades are not so good, because America has a comprehensive view of people, and he may have some awesome experiences. . It also has something to do with family background.