The past two decades have seen the rise of the residency model, another nontraditional pathway to certification that offers an intensive, practice-based, context-specific preparation designed to address shortages in hard-to-staff districts. Although advocates call the model innovative, research examining residencies at scale warrants skepticism around whether they truly offer a distinctive preparation. Surveying all programs across Tennessee about their adoption of features that characterize the model, we find that residencies offer a unique pathway to teaching in some expected ways though not all. Specifically, residencies reported longer clinical placements, more financial support for residents, and higher rates of mentor training, though they mostly did not report unique practices of candidate recruitment, district partnership, mentor selection, or curricular design. Moreover, we see that the distinctiveness of the model is in decline, with evidence of its dilution among newer residencies and the spread of its features among traditional programs.