The state definitely recognizes academic qualifications and has the same status as ordinary colleges and universities. You can check the name of this school on the website of Beihang Net College. If there is, it is formal; If not, it is informal. As for that teacher's attitude, it's completely self-destructive. Beihang University is not the only distance education school. There are 68 universities in China, and Beihang University is not the only learning center. One less student means one less income.