The purpose of this study was to investigation the practices and challenges of using signrnlanguage as a medium of instruction in two primary schools of Deaf students’ classes inrnAddis Ababa.rnTo achieve this end, the research employed descriptive survey research methodology. Arntotal of 133 respondents participated as the source of data. 90 students with hearingrnimpairment, 31 teachers 4 principals and 8 parents were involved in the study.rnQuestionnaires, classroom observation and interview were used as data gathering tools.rnThe collected data were analyzed using both quantitatively and qualitatively usingrnfrequency counts, percentages and descriptive phrases. The finding of the study indicatedrnthat students, teachers, principals and parents were supportive of using sign language asrnthe medium of instruction. It was also found that sign language textbooks are notrnprepared based on the grade level of students with hearing impairment. The findings ofrnthe study also revealed that lack of sufficient training of teachers in the language,rnshortage of involvement by parents in schools in the activities were the major problemsrnidentified during the study.rnBased on the finding and conclusions, the study makes recommendations which includernteachers’ sufficient training, supply of necessary curricular materials, professionalsrnsupport, mobilizing the community and education offices. The study also recommendedrnsome better ways and means for further implementation of sign language as a medium ofrninstruction facilities are almost absent. Moreover, lack of commitment and interest byrnsome teachers to teach in the language, a mismatch between the trained program and thernknowledge gained when put in actual practice, shortage of involvement by parents inrnschool activities were the major problems identified during the study. Thus, to solve thernabove problems recommendations were forwarded. Providing training, supply ofrnnecessary curricular materials, professionals support, mobilizing the community andrneducation offices. The study also recommended some better ways and means for furtherrnimplementation of sign language as a medium of instruction