Answer:
A school of thought, or intellectual tradition, is the perspective of a group of people who share common characteristics of opinion or outlook of a philosophy, discipline, belief, social movement, economics, cultural movement, or art movement.
Schools are often characterized by their currency, and thus classified into "new" and "old" schools. There is a convention, in political and philosophical fields of thought, to have "modern" and "classical" schools of thought. An example is the modern and classical liberals. This dichotomy is often a component of paradigm shift. However, it is rarely the case that there are only two schools in any given field.
