Classroom environments were analyzed to better understand adult language modeling rates and whether teacher certification practices contributed to differences with learners with deafblindness (DB). Student characteristics were also examined in relation to communication rates. When there is a dual sensory loss, access to tactile and visual communication forms (i.e., multimodal) in addition to verbal communication is needed. Data were collected from 15 teacher-student dyads from four states through behavioral coding of videotaped language samples, teacher surveys, and the Communication Matrix assessment. Overall, teachers used verbal communication significantly more than additional classroom staff. Teachers in a state that required a severe/profound certification had significantly higher rates of overall communication and visual communication, and they had students with higher communication levels.