I managed a whopping 78% and when I told my scholarly spouse (who is a student at UofO) he looked at me like I was dense because I got to have my notecard and still scored "so low".
I think the test was difficult - even with a good understanding of things. But I'm not sweating it. I figure I just fall under the pressure of being "tested". The important thing is whether I understand or not and not just how I scored.