Touchstones of Good Teaching

I like this infographic.  "Peel back the curtain and make performance expectations clear" really hit home for me.  In the past couple of years we have had our students submit videos of themselves performing essential skills so that we can assess them.  We weren't clear the first year with our expectations, so last semester we gave out what we felt were clear guidelines on the evaluation process for video submissions.  We still had some students who did poorly and felt that they did not understand what we were looking for.  Other students were successful and received 100%.  Does that mean that we weren't clear?  That some students understood the instructions better than others?  Or does it mean that some students expect to be given step-by-step instructions to a perfect grade but don't want to think for themselves?  And if we give them that, are we helping them to mastery, or are we handicapping them from being able to think critically?