It is crucial for social researchers to clarify their researchers' roles, especially for those utilizing qualitative methodology to make their research credible. The purpose of this paper is to examine the advantages and disadvantages of the researcher's insider role, an instructor, occupied within case study research on the integration of Information and Communication Technologies (ICT) in the teaching-learning process at the School for the Handicapped (SfH) in Turkey. In this respect the author will demonstrate and discuss the advantages and disadvantages of being an insider-researcher considering the researcher's role, determining the case, the aim and research questions of the study, issues of the research design, the collection and analysis of data, ethical issues and reporting the data. Each theme is discussed concerning the advantages and disadvantages of being an insider researcher. The researcher concluded that in order to conduct valid research a researcher must overcome some of the disadvantages with the help of several preventions. The results have been discussed in the light of related literature and the whole data.