Grade B is equivalent to graduating from primary school, and Grade A is equivalent to graduating from junior high school. The national English test is geared to the whole society and is divided into one to five grades, with Grade B equivalent to primary school graduation and Grade A equivalent to junior high school graduation. College English 1A needs to pass 70 points to get CET-4, and 1B needs to pass 60 points to get CET-4. Grade a is relatively more difficult than grade B.