Tactical way
Well, youre FI. By default you are supposed to know everything.
But you dont. So, use your experience, seniority and position. Ask the students, what do ghey think why is so. Give them homework, divide them and harvest the fruits.
At the end, you will know the answer, they will have some other things to do and no to bugger their instructor...
Win win situation.
But what would I know.
RGDS, Mike