It didn’t take a computer whiz or a mathematical genius to realize the numbers weren’t adding up. The Department of Computer Science and Department of Mathematics had long outgrown the shared Math and Computer Science Building, which opened in 1982. For the past few decades, each department has operated out of multiple buildings across the San Marcos Campus.

Such dispersion can dilute a department’s identity, notes Aubrey Holt, a Department of Computer Science administrative assistant and its representative in Campus Master Plan discussions. “There has sometimes been a disconnect of students understanding the identity of Computer Science, because they’re not always seeing our offices or faculty,” she says.
A similar sentiment is shared by Dr. Paul Dawkins, chair of the Department of Mathematics. “Like most things at this university, math has grown a ton. We’re really a huge unit with more than 100 faculty,” Dawkins says. “And so, we’re kind of spread all over.”
That’s about to change, thanks to the 2025–2035 Campus Master Plan, which includes the new STEM Classroom Building. Currently under construction, the eight-story, $137 million facility is on track to open Fall 2026, allowing both Mathematics and Computer Science to consolidate under one state-of-the-art roof for the first time since the 1980s.
Of all the plans laid forth in the TXST Master Plan, perhaps no area of the university is seeing a more immediate impact than the STEM (Science, Technology, Engineering, and Mathematics) Quad. Set on the western side of campus, it has emerged as a nexus of scientific and engineering education and research. Just across the street from the STEM Classroom Building, the 1,000-bed Richard A. Castro Hall opened for the Fall 2025 semester. A portion of the residence hall is dedicated to STEM and Art & Design Living Learning Communities, maximizing the residents’ potential for academic success.