Why do so many MIT grads wear their class ring, compared to other colleges?
Why do so many MIT grads wear their class ring, compared to other colleges? - Quora
至于Harvard class ring:
Everyone knows about that massive brass rat the MIT students wear. Does Harvard have something similar? Harvard class rings aren’t as universal as the brass rat is to MIT but they are around. Harvard class rings are almost universally signet rings; however, there is no “official” ring.