John,
You are correct. I review tests and quizzes each time I give them. If many students miss a questions, I post the question and answers choices and ask students to discuss through a discussion formun/discussion board, which answer is correct. If they can defend their choice and by defending their choice another answer may be correct, I give them the credit. Then, I make sure I reword the question/answers better the next time if I use the same question at some point again.
Thanks!
