Teaming is a method of grouping students so they share the same set of teachers for their core subject areas—science, math, language arts, social studies, and sometimes physical education and health. Most often, teams are created when an entire grade is broken into groups who share the same set of teachers. Small schools that do not have enough students to form teams can create a grade-level team or multigrade-level teams. The core subject teachers usually share a common planning period and, in many situations, also share a team planning period. Teaming is most often used in middle grades education because its positive outcomes are particularly appropriate to the developmental needs of young adolescents.