I took it in high school (a long time ago) and had never had a need for it until I worked for the president of a community college about 5 years ago. He was an older man and although he made sure that everyone who worked there and the students had the very latest technology, he never even turned his computer on. And, he actually dictated letters. Luckily, I could just take the laptop into his office when we went through mail or if he asked me to send a letter without the laptop with me, he'd tell me what to say and I'd just type up a letter with the gist of it! Bless his heart, he could never remember what he'd actually said and as long as I had the basic items in the letter, he was fine with it!
I tried to take a class in shorthand to refresh my memory, but no one even teaches it anymore. Luckily, every boss I've had since has typed their own letters and sent them to me to format and proofread.
Good luck with the tests, Pin Wizard! Hope you get the job.