American Institute of Physics
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Sigma Pi Sigma exists to honor outstanding scholarship in physics; to encourage interest in physics among students at all levels; to promote an attitude of service of its members towards their fellow students, colleagues, and the public; to provide a fellowship of persons who have excelled in physics. In the four dimensions of Honor, Encouragement, Service, and Fellowship, the mission of Sigma Pi Sigma takes a longer view.
Sigma Pi Sigma chapters are restricted to colleges and universities of recognized standing that offer a strong physics major. Students elected to membership must attain high standards of general scholarship and outstanding achievement in physics.
Undergraduate candidates must be in the upper one-third of their class in general scholarship to meet the minimum standard that chapters may use.