I too two yers of shorthand in high school, and was pretty good at it. I only used it very infrequently at my jobs out of high school, and when we were first married.
When I went back to work 3 years ago (after being a stay at home mom), I never mentioned, verbally or on my application, that I knew shorthand. The second day on the "new" job, my boss called me in his office and said bring a notepad. I sat down and he started rattling off a memo! My shorthand kicked in, but wow! was it ever poor!!!! I could only translate some of it, and he had to fill in the blanks. I asked him how he knew I knew shorthand. He said, "You're the right age for having taken it in high school, and considering what kind of secretarial jobs you've had, I just knew." What he didn't know was as I graduated, the tape machines came on the scene full force, so there wasn't much opportunity to really get good at it.
Needless to say, I don't do the shorthand bit anymore. After all, I've been out of high school for 35 years, and up until the time he dictated that memo, hadn't really taken shorthand in 32 years.
I use it now expecially at Christmas time - I write everyone's gifts down on a list - in shorthand! Drives my boys nuts! I still use it for myself, and sometimes when I'm taking a phone message from someone who talks too fast.