That's why I said subtle. It would be like requiring you to recite all the marks you received on all your assignments in all your classes in your last semester

That's why I said subtle. It would be like requiring you to recite all the marks you received on all your assignments in all your classes in your last semester of your senior year of college. I assume that if you had just graduated, this would be easy, but if you had graduated 10 years prior, this would be hard (feasible if you'd kept the paperwork--but hard).