Parents often criticize schools for not doing their job. Many blame sc

Responding to a pm:

It is actually not very tricky. I am surprised that many people were taken aback. The only reason I can think of is that they did not understand the argument properly.

The argument says that parents blame the schools for low scores. The question is - whose low scores? their wards' low scores. The parents blame the school for not-so-good performance of their own children. The surprising thing is that most of these parents come from high achieving districts i.e. their wards go to schools which produce better than average results. You would expect that parents of students studying in schools producing better results would be happier.
Hence, here is the paradox.

What can you say to explain this paradox?

Say, most of the toppers come from school A (a fancy private school). The local govt got 50 school complaints this year. Say, 40 of them were from from parents of students studying in school A. How can you explain this?
I can think of various things - Parents who send their kids to school A expect very high scores from their children. Parents see that their kids' classmates are getting very high scores so they are unhappy about avg scores of their own kids. When children get 80%, parents get greedy and want 90% so they complain. etc

We will look at options B and E:

B. Parents have no knowledge of their district's own scores.

It doesn't explain why parents of students studying in school A (just as an example) complain the most. They don't know the school's avg score. So what? Even if they do know that the school's avg is high, it doesn't matter. They will still complain about their children's scores. It doesn't explain why parents of this school are most unhappy about their children's score. Even if they know that the school avg is high, it will not make them happy about their kids' performance. Does not explain the paradox. Is the answer.

E. Most complaints about schools come from political activists, most of whom live in high-achieving districts.
This explains the paradox. Who are the most critical parents? Political activists. They live in high achieving districts (e.g. their children go to school A). The political activists are the most vocal. Wherever they go, they will complain. Since their kids go to school A, they complain about school A. This explains the paradox that most complaints come from school A even though the results there are good.

Answer B