Sigma Delta Tau is a national sorority committed to Empowering Women! We do this through scholarship, service, sisterhood and leadership. Today, SDT is proud to have more than 60,000 sisters who are bound by similar ideals, yet are each amazingly unique and talented. This individuality is what makes SDT strong and resilient. It all started with seven incredibly empowering women at Cornell University in 1917…we encourage you to learn more about where we’ve come from and where we’re going. Read more about our history…