The purpose of Pi Sigma Alpha is "to stimulate scholarship and intelligent interest in political science." The society functions at the national level, sponsoring programs and events of value to the profession and teaching of political science, and at the chapter level. Each chapter is encouraged to provide a framework for enriching the exposure of its members and the wider university community to the study of government and issues of public concern.
Qualifications for national membership in Pi Sigma Alpha include high scholarship, manifested interest in political science, and promise of achievement in the field. Election to active membership shall be from among such juniors and seniors who are majoring in political science at UIW and meet each of the following qualifications: