The present invention is directed to methods and related systems for evaluating and demonstrating various performance characteristics of one or more dental curing lights. The method and system employs a performance evaluation member (e.g., in the shape of a disc) comprising a carrier material (e.g., any of various suitable polymeric materials) and a color-changing material on or within (e.g., impregnated within) the body material. A user is able to use the performance evaluation member to demonstrate and evaluate performance characteristics relating to the presence of particularly desired wavelengths within the light emitted by a dental curing light, footprint size and shape of emitted light, uniformity of intensity within the emitted footprint, as well as relative intensities of desired wavelengths provided by two or more dental curing lights.