Could the Schoolteacher Have Saved Tarwater?

It seems to me that the real tragedy in this story is the schoolteacher's inability to connect in any way with anyone. He tries hard to convert Tarwater to his way of thinking by spending every minute of every day with him but his methods do not have any affect at all. If he had taken a less direct and offensive route to establishing a relationship with Tarwater he may have been able to make some kind of impact on his life. If he had recognized the danger of taking an obviously disturbed young man into his house he might have approached the situation differently. If he hadn't felt such strong desire to have an immediate impact on Tarwater's his life he might have considered it logical to demand good behavior from him in return for his room and board. Perhaps if the schoolteacher had been more stern and detached from Tarwater instead of trying to immediately replace old Tarwater as another deranged father figure he could have forced Tarwater into reacting with his peers or anything else in the world that is relevant he could have saved Tarwater, Bishop, and himself.