The purpose of this study is to investigate how students conceptualize their learning and design experiences in an undergraduate interior design accredited program. In particular, how do they rate their own abilities in general skills and student preparedness, what interior design skills and knowledge are important to them, as well as what design activities are most significant and least significant in the design process? Many scholars argue that prior knowledge is an essential variable in design learning. However, if students' perceptions of design are incorrect, inconsistent, or incompatible with experts, radical conceptual change is required in order to modify these misconceptions.