CommanderDroll. Precisely. Twice!
I get quite p*d off when we are endlessly told, like on here: 'Well, state schools should teach excellently then it wouldn't be a problem'. OK, so let's see how well NLC/Eton/Westminster/Cheltenham etc cope with having 75% of their pupils drawn from a deprived, neglected, socially marginalised, welfare dependent 'sink' council estate. Let's see the string of A's from them.
Many state comprehensive teachers don't have the luxury of small, neat rows of healthy, well-presented, properly parented, highly motivated, well-to-do 'school-ready' DCs sitting silently, yet eagerly before them as they commence their lessons. They have to take all-comers, good, bad, ugly.
I went to a 'good' girls grammar about a thousand years ago. Many of my teachers were very, very good. A lot of these got chewed up and spat out by the 2nd formers (Y8 today) who were the worst behaved in the school- no longer 'newbies' but not yet at the stage of needing to behave, shut up and listen because their O level might depend on it! However, once those teachers were teaching O level, let alone A level, they were brilliant. However, most would have spent 3/4 of their teaching careers on stress leave had they encountered the '75%' which I described above!