I'm in High School, and I think 5 out of 6 of my teachers kick ass.
I only don't like my Word-Processing teacher, because the lights are always dim in the class making me sleepy, and the chairs hurt my ass.
Actually teaching first graders would probably be a much bigger effort than teaching older students who understand *why* they are learning, and have a more mature attitude.
Second part of that statement is also incorrect. My 6th form teachers (last 2 years of education) actually had a genuine interest in my future and were around to give advice even when they didn't have to be.