Back in the day my father was ministry school servant and I got to see the grades...and knew who was smart and who was stupid.
Yes.....early on, we had to turn in our review sheets to our book study conductor (I think) or to the School Servant maybe. There was a certain amount of pressure to do well because someone was going to be evaluating you based on your score. When I got older, I remember realizing that there was noting they could do if I didn't turn my form in or for that matter, didn't fill it out at all !