Try dealing with a chemistry teacher 3 years straight who can in one 45 minute class manage to fill up and erase a standard size whiteboard 4 times over. It was a delirious futile effort to even make sense of Chemistry, even if you loved the subject. You either needed the iron will to study by yourself and make sense of it on your own, or go to an out of school curriculum program. Got nothing but flat D's from that class, and I personally love chemistry. And this is a high school mandatory class we're talking bout here.