This study defines the content-analysis under three sub-headings “meta-analysis, meta-synthesis and descriptive content analysis” and illuminates the parameters of the content analysis expected to be published in the special issue. It is aimed to outline the guidelines for the researchers concerning how to do a systematic content analysis instead of simple descriptive one. Overall, it is thought that the meta-analysis and descriptive content analysis, which take the criteria into account, will get the educational researchers, practitioners, policy makers and institutions to grasp the outcomes demanded.
