I took the class at Hartford Hospital for NVCC. We basically watched a video that took us through the steps and practiced along with the video. The instructors added a few words here and there and answered questions and watched out for people who needed extra help going through the motions. At the end there was a short (i think 25 question) multiple choice test which isn't difficult if you had your eyes open . Overall it was much better experience than i expected i think it ended in about 2 hours.
I just took it this week...we were able to leave a whole hour early. It was very easy and to the point. We watched videos, did hands on work, and heard the instructor lecture. We were then given a multiple choice exam at the end which was 25 questions long. Very easy if you paid some attention...good luck =)