If you are a glass-half-full person (I am), it's fair to call it grade inflation. In the sense of an unfortunate (or natural) the-standards-keep-chaning-over-time and suddenly people have better grades than 10 years ago, but the same knowledge.

If you are glass-half-empty person, you can interpret is as a sort of implied "if you pick my school (which means I get money) I will make sure your kid get good grades".