Cubbie is one of the students, he is a nerd or maybe? He is afraid of the teachers(Miss Circle, Miss Thavel and Miss Bloomie), when the lights are on, it means that the teachers would stop killing students but if the lights are off, it means that the teachers would start killing students except the good teachers(Miss Emily, Miss Sasha and Mister Demi), Cubbie is now at the library, studying as always while the lights are on

Cubbie: "study, study, I have to study as always"