Supporting language skills for children who evidence delays in preschool is an important area of focus for school-age reading outcomes. Two preschool teachers were trained to implement a play-based language intervention, Enhanced Milieu Teaching (EMT), with children from low-income households with delayed language skills. A multiple-baseline single case design study was implemented to measure the effects of coaching and data-based feedback on teachers' use of EMT practices. One teacher reached criterion levels on all three behaviors, while the second was unable to reach criterion levels on all behaviors due to absences and the end of the school year. Teachers' use of EMT strategies generalized to lesser extents to uncoached sessions.