Course evaluations from my 10+ years of teaching general and organic chemistry
You know, like give them the test before they have to take the test kind of preview? Seriously, you don't give them the test before the test? Wow! You ARE a bad teacher!!!(insert sucking sound as I extricate my tongue firmly embedded in my cheek)
I think this is that transitioning period between high school and college. They still need a small amount of coddling. But really though if you had made clear what the "concepts" are, I don't think there should be any need to go over that again.