This study investigated the following questions: (1) "What are the perceptions that elementary school principals have concerning the influence of interior design elements such as floor and wall coverings, lighting, flexibility, acoustics, color, texture, patterns, cleanliness, and maintenance on student achievement, teacher retention, and student attendance?" (2) "Do the acoustics of the environment relate significantly to student achievement?" (3) What floor coverings in the classroom relate significantly to the acoustics of the classroom?" and (4) "Are there any possible links between floor coverings in the classroom and student achievement?" The study found that in all subject areas studied, students attending schools having carpeted classrooms had higher achievement scores than those attending schools with hard surfaced classrooms. It also found that the importance of interior design of a school is a slightly higher priority for school principals than teachers. (Contains 66 references.) (EV)