Should I send a gift (money) as a graduation gift?

A friend’s son just graduated from law school as “Doctor of Jurisprudence”. I received a very nice card announcing the graduation including hard copy pictures and a bar code to see more pictures on the internet. The graduate already has a job working for the Sate of Hawaii.

I’m really not sure of the appropriate thing to do. Of course I could just do nothing more that tell the parents, “congratulations” and forget the the matter. But I feel like sending a check for a couple hundred bucks. Not much but could be helpful.

What do you think?