SLU was the first Jesuit university to receive the Higher Education Excellence in Diversity Award. Top 5 Majors at SLU. 4 days ago · Saint Louis University is a private institution that was founded in 1818. Saint Louis University (SLU) is a private Jesuit research university with campuses in St. Saint Louis University or simply known as SLU, is a private Catholic research university offering programs at the elementary, secondary, undergraduate and. At the core of this diverse community of scholars is SLU's service-focused mission, which prepares students to make the world a better, more just place.