The American Catholic History Classroom is a continuously-updated primary document site featuring a range of materials related to the American Catholic experience.

Aimed at both educators and researchers, the Classroom currently has eighteen fully-developed libguides on a range of topics that can be fit into existing curricula. Each guide features between 20 and 40 primary documents and photographs, background information sections written by educators and historians, chronologies that help educators and students make sense of the materials in historical context, "So What?" sections outlining broader issues related to using the site materials in the classroom, and topical reading lists for anyone wanting to expand their knowledge on each topic.