This year I am a senior in high school and am deep into the college admission process. All of these universities have unique traditions, and one I find very interesting is painting! At Duke, every first-year student leaves their mark by painting the East Campus Bridge during orientation, while at Northwestern, student groups “guard” The Rock for 24 hours before layering on their message. UVA’s Beta Bridge is one of the most visible forums on campus, where paint layers pile up daily with everything from sports cheers to memorials. At Michigan, the Ann Arbor Rock has been repainted so many times since the 1950s that it’s practically a geological formation in its own right.

From a materials science perspective, these traditions are more than just campus fun. Each new coat of paint adds a polymer-based layer, creating a stratified record of pigments, binders, and fillers that interact over time through adhesion, diffusion, and weathering. Environmental exposure (UV radiation, humidity, freeze–thaw cycles) induces degradation, causing chalking, flaking, or microcracking that can expose older layers beneath. The constant repainting also creates a multilayer composite structure, sometimes several inches thick, with mechanical properties similar to laminates: stiff yet brittle, prone to delamination under stress. These campus traditions thus accidently generate living laboratories of applied materials science, where students walking past a rock or bridge are witnessing the durability, failure, and layered complexity of everyday polymers in action.