a situation in which students are given higher grades (= scores on tests) than in the past, so that

中文解释

成绩通胀（给所有学生颁授比以前更高的成绩，导致学生的整体平均成绩偏高） He said that primary schools and high schools are just as guilty of grade inflation. 他说，小学和中学也同样存在成绩通胀的问题。