Large schools tend to be anonymous places, places where teachers and students are little known to each other. The anonymity often breeds apathy or alienation; many kids fall through the cracks.

Many kids come to school already disconnected, apathetic or alienated, and the only way you can overcome that is to give these kids a sense of being connected, a sense of being cared about. It sounds a little touchy-feely, and it is, but it's important.