What might it mean that kevin feels caught between two different “fathers”—at home with his family and at school with his teacher, who is a priest? why might the author give this word multiple meanings?

So what it means by "two farther" is that he is between two adults that are treating him like his son, his teacher having strict teachings and have his father do the homework instead, the author made multiple meanings because he wants his readers interpretation guide the story instead of his words, the priest I'm guessing on but helps him with his problem with the teacher and his farther since he's getting abused in the story.

Conclusion if that's an answer.