Trauma-informed care (TIC) provides a medical framework for addressing and mitigating the negative consequences of trauma. In response to student and faculty advocacy, medical schools are developing trauma-informed curricular content. However, medical education literature does not present a comprehensive assessment rubric to evaluate medical students' acquisition of trauma-informed clinical skills. A committee of medical students, trainees, and faculty developed a longitudinal TIC curricular theme at Harvard Medical School (HMS). Guided by the National Collaborative on Trauma-Informed Health Care Education and Research competencies, the committee created a set of medical student TIC competencies from July to December 2019. From November 2021 to November 2022, 3 committee subgroups generated new TIC descriptors for each HMS entrustable professional activity (EPA), then circulated these to other subgroups, external experts, and stakeholders for review and feedback. From April to June 2023, the committee iteratively reviewed the materials until reaching consensus for content and pedagogy. The committee integrated TIC content into HMS's existing EPAs expected of students, provided anchoring descriptions of each level, and achieved consensus using a process of iterative review with TIC content experts. The committee identified 10 TIC competencies and revised all 13 general HMS EPAs to include specific items based on these competencies. The committee incorporated at least 1 trauma-informed competency into each HMS EPA. This novel set of HMS EPAs provides a framework for assessment of TIC clinical skills. Faculty will be trained to correctly and reliably incorporate TIC competencies into patient care and to use the TIC-inclusive EPAs for student assessment, ensuring that TIC is standard medical practice at HMS. This work may facilitate the adoption of trauma-inclusive EPAs by other institutions to educate the next generation of physicians to practice TIC and thus promote a more accessible, safe, and equitable health care system.