Alpha Sigma Nu is one of the highest honors that can be given on a Jesuit campus. Juniors, seniors and students in graduate and professional schools who rank in the top 15 percent of their classes may be considered for membership. Each chapter can nominate no more than 4 percent of the junior and senior classes from each school or college of a university. The method of selection varies from campus to campus, but is based always on scholarship, loyalty and service . Chapters may also initiate honorary members, persons who are not students in the school but who display the outstanding qualities sought in Alph Sigma Nu members.
Activities vary from chapter to chapter.
Some SAN chapters have long-standing traditions of activity in such areas as orientation programs, tutoring service s, honors convocations, leaderships conferences, seminars, lecture series, outstanding teach awards, reports to the university administration and community service . Other Chapters limit activity to the annual selection and initiation of new members, recognizing those who prove themselves outstanding in their other campus activities. Alpha Sigma Nu is recognition that the student has achieved a high level of academic accomplishment and also shown leadership by embodying, in word and deed, the values of service to others and loyalty to the ideals and goals of Jesuit education. ASN members promise to continue to do so throughout their lives. Nu members are generous in their support of the society through the Annual Sustaining Fund, which supports scholarships, National Book Awards, and the administration of the society.