The concept of indoctrination is typically used to characterize the actions of individual educators. However, it has become increasingly common for citizens to raise concerns about the indoctrinatory effects of institutions such as schools and universities. Are such worries fundamentally misconceived, or might some state of affairs obtain under which it can be rightly said that an educational institution is engaged in indoctrination? In this paper Christopher Martin outlines what the concept of "institutional indoctrination" could mean. He then uses Jürgen Habermas's discourse theory in order to develop a specific conception of institutional indoctrination: an educational institution indoctrinates when it exercises its authority in order to support the deliberative norm that some belief P ought to be exempt from tests of or challenges to its truth or rightness just because it is belief P. Martin argues that this norm undermines conditions of symmetrical and inclusive public discourse essential to the development of knowledge and understanding among free and equal citizens. That is, institutional indoctrination involves a closing of the "public" mind.