Yes it is true they do want the instructors in on the 5th day. It all started after a certain person cut the wages and put the instructors on a 4 day week, so the instructors could get a job, doing something else on their days off. Then in the big blue machines wisdom they forced the instructors back on 5 day weeks for 4 days money. So in theory yes they do work the 5th day for nothing.