Class A colleges are general public undergraduate colleges; Class B colleges are branches of undergraduate colleges or colleges approved by the state to be upgraded from junior colleges to undergraduate colleges in recent years, usually three private universities or independent colleges.

According to the different admission batches required by the college entrance examination, undergraduate courses are divided into advance batch, first batch, second batch and third batch. 20 1 1, Shandong province merged the second batch and the third batch into two batches. These admission batches belong to the same level and the same education (that is, the undergraduate education level). At the same time, undergraduate education institutions are divided into "key undergraduate institutions" and "ordinary undergraduate institutions". "Key undergraduate colleges" and "ordinary undergraduate colleges" only focus on differences, and there is no essential difference. The former focuses on theoretical research, while the latter focuses on theoretical practical application.