I have one confusion on the following paragraph: "At one level, my Grandma Frieda's college records are utterly ordinary-- don't tell much of a story. She's a good student, and teachers say the nice things that they say about bright students. " Here, what is the phrase "don't tell much of a story" in the context mean? What is the role it plays in the first sentence? My understanding is that it links the reverse meanings between the first sentence and the second one. But I am not able to know the its exact meaning. Hope you guys could help me out. Thanks a lot!