Express Scripts Hall (ESH) is a key, technology-focused academic building on UMSL's North Campus, renamed in 2011 through a partnership with Express Scripts. It houses the Departments of Mathematics, Astronomy, Statistics and Computer Science, along with advanced computer labs like the Learning Resource Lab and the state-of-the-art Cybersecurity and IT Innovation Lab (CITIL) in Room 204 for hands-on training. The facility features numerous HyFlex classrooms with modern tech for hybrid learning, collaborative spaces, and support for programs in math, computing, data analytics, and cybersecurity — serving as a hub for innovative teaching, research, student resources, and events like hackathons.