UPDATE
OK, I got an e-mail from him. He says: The question was "Are you ready for your blue belt"? And the answer is YES! your answer was "I don't know...". Please tell me you see the difference.
I don't recall saying "I don't know", I DO, however, remember saying "I think so", meaning I think I know what I'm supposed to know to pass.
Bookworm... please listen to me, OK?
The question is, `are you ready for your blue belt'. One perfectly legitimate way to take the question is, `Am I up to scratch enough for a blue belt?' That for me would be the preferred interpretation of the question. Now that's what the blue belt test ITSELF is supposed to show. But clearly, if the blue belt test determines the answer to that question, and you are taking your blue belt test, how can you possibly answer the question until you know the results of the very tests you're taking???. Let me go through it again with you, just so you'll appreciate the next thing I'm going to say: (i) the question is asking you if your skill level now merits a blue belt; (ii) the question is part of an exam which is the supposed determination of the answer to that question; (iii) therefore you are being asked a question as part of an exam which you cannot properly answer until you've actually completed the exam!
The next thing I'm going to say is, (iv) this is—to translate the honest Anglo-Saxon into the cowardly-learned Latinate—a case of someone copulating with your mind, as it were. This is a lousy, cheap shot, in plainer terms. And if this guys says, `well, no, actually, I expected you to take this to mean, "Do you think you deserve to test for blue belt?"', then it would be an instance of criminal insincerity. He's saying in effect, `Read my mind, and if you can't, you don't get to pass'.
I hate to suggest this, Bkwrm, but you might start thinking about shifting your training to a place where they don't play stupid arrogant-*** mind games with their students...