A bureaucracy tries to keep itself alive. That's part of its goal. But "Yes, Prime Minister" is a British series, so unions are small, and not well off; they've got some political influence, and form a jumping board for future politicians, but that too is the nature of "middle field", as it's known in Dutch: the sector between citizens and government. Teachers' welfare also can't be the point, since more and more people avoid becoming teacher altogether. It's too much work for a pretty modest income.
Education involves a lot of money. It's the interference of individuals that want some of that that deteriorates it.
Education involves a lot of money. It's the interference of individuals that want some of that that deteriorates it.