Use this door hanger outside of your classroom door to inform anyone in the hallway to be extra quiet near your classroom. It will also serve as a do not disturb sign to let others know they should not enter your classroom to avoid causing any disruptions to your concentrating students while they're taking a test.
This door hanger is good to have for all classrooms in your school. All students and staff can become accustomed to seeing a uniform sign and respect a classroom's request of not having any disturbances to distract students during testing.
Simply print out the door hanger, laminate for sturdiness, and cut out the pentagon shaped inset at the top.