The margin of error is 3 percentage points. With this feature, teachers can expand the area where students work and be more creative.
Students have more flexibility around the room.
Older school buildings typically have central heating that is operated outside of teachers' control and according to the seasons. Carpeting may be spurned by a rural school district that has to worry about children tracking in mud from farm fields. However, she says, carpet can create a quiet environment with good acoustics, which helps students concentrate. Urban school districts that are prone to crime may favor windowless classrooms. But she says classrooms that have only artificial light can make students feel tense and cause eyestrain.