Fuzzy Mud

You are a student at Woodridge Academy. Due to a dentist appointment, you arrive late to school and you go to the office to check in, however, no one is there. You are worried, just yesterday you heard rumors that a weird rash is spreading around the school. You check all the offices and still find no one around. You decide to go to your classroom, upon arriving, you find that the teacher and your classmates are not in the room. You begin to feel that something is terribly wrong. You make the decision to leave the school and get help, but just as you try to walk out the door, you see a note stating you must have the combination to each lock in order to leave; the building is on quarantine until further notice. Unlock each lock and escape in time! Hurry you have 45 minutes before you will be stuck in the school until the quarantine is lifted.