That's one way to test their knowledge: Teacher giving a lecture to...

... first aid test,' said one of her pupils, Rachel Richens. But a fellow student, who is studying to become a certified nursing assistant, realised the situation was more serious, at first suggesting her teacher was having a seizure, reports ksl.com . ...

http://www.dailymail.co.uk/news/article-2478196/Thats-way-test-knowledge-Teacher-giving-lecture-nursing-students-saved-heart-stops.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490