Yep, like day and night. Every once in a while a student comes along who goes from showing every sign of failing miserably by the end of term, to being the top student in the class. As a teacher, you've got to love students like that. Not because they make you look good (you've got nothing to do with it), but because they get a chance to wake up to their own potential. That kind of change is all their own doing. They deserve all the credit. I love students that do that.