Was Ben a teacher? Or was he the principal?
I forget.
Ben being the principal would make more sense. Because then it is the Ben/John chess match that has been going on since season 2.
Here is Ben, the principal of the school. King of his own little world.
Now here comes a substitute teacher that seems to be getting along quite well with everyone.
So now like on the island they will compete for the attention of the faculty and students.