Both situations, school and church, represent an abuse of power, the strong over the weak, with threat of retribution if the victim reveals the abuse.

However, the teacher is instructing the student in math, social studies, writing, etc. The Priest or Preacher is instructing morals and ethics. They stand in the pulpit and declare the gospels, the words of Jesus, and threaten eternal damnation to those that don't follow the Word.

The teacher's threat is a failing grade while the priest's threat is eternal damnation. The level of hipocracy from the latter far exceeds the former. To preach the ten commandments in public and break them in private is, to me at least, a greater sin. To hold oneself up as a moral authority while buggering a child is the greater sin. And to then cover up the sin claiming the authority of the church is greater than the law is another abomination.