According to the classification of China's Ministry of Education, undergraduate colleges are divided into six categories: double-class universities, first-class discipline construction universities, 985 universities, 21/universities, ordinary undergraduate colleges and independent colleges, among which ordinary undergraduate colleges are divided into one batch, two batches and three batches. According to the latest classification results of undergraduate colleges announced by the Ministry of Education, Beihang Beihai College belongs to the second batch of undergraduate colleges. Therefore, it can be said that Beihang Beihai College is not three colleges, but the second batch of undergraduate colleges.

Beihai College of Beihang University is an ordinary undergraduate college, which is affiliated to Beihang University.