Let’s officially retire this pre/post-activity question:
<pre-activity> How would you rate your knowledge of X? (or the common variant: How confident are you in your ability to do X?)
<post-activity> After having participated in this activity, how would you rate your knowledge of X? (or …how confident are you now in your ability to do X?)
First and foremost, it’s really lazy. Second, we’ve known for long enough that physician self-assessments are reliably unreliable (Davis et al, 2006). It’s better to ask no question, than a bad one.