The STC rating for each partition in a given classroom will vary depending on the adjacent space. For example, a classroom wall that is adjacent to an exterior space will need to have an STC rating of 50, a wall that is adjacent to a public restroom will need an STC rating of 53, a wall that is adjacent to the hallway will need an STC rating of 45, and a wall adjacent to a music classroom will need an STC rating of 60.