In 2015, the Paris Agreement of the United Nations Framework on Climate Change set an ambitious 1.5C temperature goal, challenged countries to set mitigation targets, and required transparent progress reporting. It also acknowledged the importance of non-party stakeholders, like businesses, banks, investors, and subnational governments (e.g. states and cities), and created space for them to commit to voluntary targets and publicly reporting alongside the treaty. Since the Paris Agreement’s entry into force a decade ago, more than 30,000 non-party stakeholders now engage in this Climate Action Agenda, with almost half from the private sector. This practicum provides students a deep understanding of climate action at the international level through applied learning. While exploring the latest climate science and how the climate treaties function, students work with selected external project partners on timely issues on the negotiation agenda at the annual Conference of Parties (COPs). Past partners have included an aerospace company leading on carbon markets, a venture capital firm adding an adaptation portfolio to its successful mitigation investments, and a household products giant assessing regenerative agriculture’s potential to decrease its Scope 3 emissions. Students build relationships with their project partners throughout the term and deliver an array of work product, including memos, decks, and oral presentations. As future business leaders, PRCOP gives Tuck students a unique experiential learning opportunity in private sector climate action at the international level.