This action research, which utilizes critical race theory's counter-storytelling, analyses a process of debunking White students' epistemology of ignorance in a history course at an urban public high school. After piloting a raced curriculum that deliberately re-centers marginalized counter-stories of students of colour, I document its impacts on White students' understanding of history. Ultimately, such a process problematizes White students' sense of identity. I employ the analytic tools of Whiteness as power to understand how White students responded to curriculum on race and racism. The analysis silences White dominant Discourse while activating counter-stories by modelling critical consciousness and "colourscence" for my students of colour. Further, I detail two specific responses made by White students in this study: (1) symbiotic transformation; and (2) active resistance. Regardless of the differences in responses, both are processes in debunking White epistemology of ignorance. (Contains 16 notes.)