That's quite an interesting read, because the example given was the JMB (Joint Matriculation Board).
The O-Level syllabi, examinations and awards were made by 9 independent boards: Associated Examining Board, Durham University Examinations Board (dissolved 1964), Joint Matriculation Board...
Yes, 5 O levels were the pathway to a lot of careers. Civil Service, State Registered Nurse, Officer in the forces, etc. English and Maths had to be 2 of the 5.
Not at every school it seems. I've seen other people on Facebook give their children/grandchildren's grades out as letters.
I think it may be that some exam boards haven't changed their system.
As BG says, he's an OAP but got letter grades; I'm an OAP, but got number grades (which were...
In my day, which is after yours, the Oxford O levels, I took at Hove County Grammar for Girls, were marked in numbers 1-8. 1-6 were passes, 7&8 were failures.
My granddaughter got her marks yesterday, which were still in the A*, A, B, and C format.