When I was in school, I didn't have a problem learning, especially if the teacher knew me and let me learn on my own. Teachers who didn't know me (whether new to school or substitutes) were the biggest hindrances to my studies.
Second to teachers who didn't know me enough to trust me were teachers who taught as though the students would never "get" what they were teaching.
I find this to still be true. I'm taking a class where the author of the book is a pompous pious self-centered know-it-all and I feel like I'm the only one that sees it! Everyone else is all "Wow, did you hear that lecture? It was so down-to-earth!" and I'm like "What? Did you not see him sneer at that girl who answered his question correctly??" Like a freaky trip to the Twilight Zone!
To make matters worse, the book is written with that same snide tone! Makes it phenomenally difficult to read! When I'm not having to keep myself awake from sheer boredom, I'm biting my tongue so I don't scare people sitting around me as I read it! (Of course, the tension building up in me keeps everyone at a fair distance anyway. *G*)
For you authors out there, (by the way: it is NaNoWriMo!), humility goes a LONG long way with most people! Just saying!