The Teacher

The Teacher is in charge of the curriculum at Todd's school. He seems to be the only faculty member working there.

Classes
It is known that The Teacher taught "Art and Creative Sciences" during Todd's freshman year.

He also currently teaches a "Modern Chemistry" class to Todd and The Nerd.

Student invlovement
For the most part, The Teacher doesn't get involved in his students affairs, but he has made a few appearances.

In "The Stand", after Todd and Brad make up, The Teacher walks in and informs everyone that "There's a monster". At which point all the characters emerge to face it.

In "New Kid" The Teacher shows up at Todd's house to enlist him in the integration of Jeremy into the school system. Todd reluctantly agreed.

In "Chronus Iokonomus" The Teacher is seen playing a game of checkers with The Nerd. He is losing and decides to hand over the reins to a willing Jeremy.