This is a great little dialogue. I have trouble picking my favorite line, but I suspect it will come from the woman in the discussion, not because she is a woman, but because they have given her several of the best lines. For example, "Why do we need 2,000 civil servants to funnel money from A to B?" "Two thousand private schools deal with these sorts of problems every day of the week."
Mind you, I'm not advocating publically funded education--not in an ideal world. But you have to walk before you can run, and lampooning stuffy people who think parents are not qualified even to choose their child's school is a good way to start.
What's perhaps a tad frightening is the thought that there are people (British people, especially?) who actually believe that parents are not qualified to raise their children. I notice that at one point where Humphrey says that, there is no laugh track. Let's hope it was an oversight.
I know nothing about this show and had never heard of it until I received this link by e-mail. Perhaps my readers are better informed.