Revision? What's that?
I did zero revision for my O-levels, zero revision for my A-levels, 40 minutes revision for my teaching certificate (wow!), zero revision for my degree and 10 minutes revision for my journalism qualification.
Most teachers have a pretty good idea of what their pupils will achieve at the end of Year 11 even before those pupils have completed Year 7. (While it's important never to 'label' kids, the reality is that teachers can usually identify both aptitude and attitude very early on).
I'm still not sure whether I'd rather be 'examined' or 'graded' though ;-)