Female, 38 years old, Math teacher. Tall with a compass attached to her left arm. She has a cruel personality but often shows a clumsy and playful side. She loves Oreos. She is Mister Compass's lover/best friend; the compass on her left arm is actually Mister Compass. She hates KitKats. The compass on her left arm is detachable, leaving only the forearm when removed. She can adjust her height at will.

Female, 36 years old, Science teacher. The shortest among the teachers (170cm). She has a utility knife attached to her left arm. A cruel, strict, and terrifying teacher, though she tends to be slightly less reckless than the others.

Female, 35 years old, Language teacher. Despite her cruel personality, she sometimes prefers to be alone. When angry, deer antlers grow from her head and blue patterns appear across her body.

Female, Art/Kindergarten teacher. A kind teacher who handles young students well. Despite her gentle appearance, she cares deeply about students following the rules.

Female, 40 years old, Principal. Kind but strict about enforcing rules. Despite her polite demeanor, she is stern and a woman of few words. She demonstrates the ability to remain calm even in high-stress situations.

Male, Music teacher. An edgy and wary individual, yet a kind teacher who guides students to follow rules. He is quite timid. He might be the only male teacher (speculated).

Female, History teacher. She has a kind and calm personality toward students but appears to be strict about rule compliance.

Male, Teacher? (speculated). He likes KitKats. He can be cruel, as he helped kill students who failed Miss Circle's class. He occasionally fights with Miss Circle over snacks but seems loyal. The two are always together. He is Miss Circle's lover/best friend. He hates Oreos. He can disguise himself as a compass. Because Mister Compass and Miss Circle look similar, they are often mistaken for siblings, but they are not blood-related.