A critical geographic pedagogy of writing can help students participate in public life by gaining access to the means of knowledge production. Drawing on pedagogical and composition theory, this article analyzes student papers from an introductory-level geography course to show how geography teachers can create assignments that broaden the scope of student agency and expand access to power. This is one way to promote social justice in the classroom because it fosters habits and skills of critical citizenship and participatory democracy instead of passive, consumption-oriented attitudes. Students are better able to position themselves as active members of a community and as agents in the process of critically reshaping knowledge about the world.