Nurses? They average $69K per year, and need 2-4 years of education. 90th percentile salary is $97K (presumably for people in expensive areas, or pulling a lot of overtime). That doesn't seem out of line.

My mom was a nurse, and the thing I noticed about her work was that when she was off duty, she was off duty. Since she was not ultimately responsible for any patient's care, at the end of shift she could just walk out and leave it all behind. If they needed her after that, she got overtime at time-and-a-half, I think. And she got a bit of pay when she was on call, too.

http://work.chron.com/much-registered-nurses-paid-year-6869....