I hope you did well in the exam you wrote but I want to ask this question is it possible for someone to be over-prepared? For me I don't think it's possible it's either one is prepared or one is not prepared, your article just remind me of my days in school, during the exam days we read all day and night just to make sure we Excel in the examination but end up not seeing the things we read just like your experience, and I bet you is usually embarrassing but to God be the glory we succeeded and graduated successfully