Political correctness (PC) has become prominent in higher education, particularly within top universities in the UK, the US and Canada. This book employs public choice theory to investigate the role of academics and university administrators in shaping PC's prevalence, exploring the interplay between ideological commitments and rational self-interest. By examining key academic domains—research, curricula, affirmative action and speech codes—this analysis reveals how PC-driven interest groups leverage rent-seeking and collective action advantages to institutionalise PC norms, thereby protecting their personal interests. While PC aligns with liberal values of equality and individual freedom, it may simultaneously undermine principles of open inquiry and fair competition. This book contributes a systematic theoretical framework to the ongoing debate on academic freedom and intellectual diversity, offering both explanatory insights and predictions for future research.