They can post their scores if they want. The only one I know of so far is someone who got a bit above 95.
In 2008, I had a 99.95 and lots of amazing study scores for Chemistry (50, 50, 49), but that was mainly because my students were already clever. I only give them the knowledge they need to achieve their maximum potential.
I wont brag any further about results because they aren't mine, nor do I think they're as useful as testimonials!

***
BTW, I'd love to get LinkedIn recommendations from all my past students, but too bad a lot of you guys are (or aiming to be) medical students who will probably never need LinkedIn, since your career is already paved ahead of you. (
See my public LinkedIn profile)
Jealous.