Tri-Beta is the national biological honor society that was established in 1922 by Br. Frank G. Brooks and a group of his students. The aim of the society is to promote interest and research in the biological sciences. National and district conventions naturally accompanied the growth of the society, with awards presented to outstanding individuals and chapter accomplishments.

Dr. Gary N. Wells at Florida Institute of Technology established the Sigma Psi chapter of Tri-Beta in 1981. Activities that reflect the society's objective include guest speakers and informational sessions. Additionally, there are also activities that reflect the diverse interest of our members such as camping trips, hiking trips, NASA tours and the Haunted Lab, just to name a few. In an attempt to encourage interaction between the faculty and students, Tri-Beta also sponsors picnics, BBQ's and banquets that bring together faculty and students.