Noun
grade inflation (uncountable)
(education) A gradual upward trend in grades awarded to students during the decades since the mid-20th century, reported in a number of countries and at a number of levels of schooling and sometimes offered as evidence of a decline in academic standards.
"Grade inflation risks undermining public confidence in higher education for students, graduates and employers alike," said Ms Dandridge. Source: Internet
Grade inflation is when grades increase substantially, making it difficult to compare one year with another. Source: Internet