Perhaps we can still test for this systematic optimism, while filtering for the noise I objected to, by instead of asking a “yes” or “no” question, asking for the probability that the student is in the top 50%. Treat the sum of these probabilities as the count of “yes” answers in the original version. Then a rational student should be able to account for his ignorance of other students in his answer.
This is even easier to game: assuming the school has any merit, any individual you ask should have good incentive to simply say “50%” guaranteeing a perfect score. The very first time you used the test it might be okay, but only if nobody knew that the school’s reputation was at stake.
Perhaps we can still test for this systematic optimism, while filtering for the noise I objected to, by instead of asking a “yes” or “no” question, asking for the probability that the student is in the top 50%. Treat the sum of these probabilities as the count of “yes” answers in the original version. Then a rational student should be able to account for his ignorance of other students in his answer.
This is even easier to game: assuming the school has any merit, any individual you ask should have good incentive to simply say “50%” guaranteeing a perfect score. The very first time you used the test it might be okay, but only if nobody knew that the school’s reputation was at stake.