This paper examines and discusses the profiles of applicants and entrants to the DGO (Dioplóma Gairmiúil san Oideachas) initial teacher education programme between 2000 and 2011. The DGO is the only initial teacher education programme in Ireland that is specifically designated to prepare student teachers for the second-level Irish-medium (SLIM) school sector. It is delivered entirely through the Irish language. This study examines data collected from all DGO applicants (N = 1002) between 2000 and 2011. Results show that demand for this programme has increased over the past decade. The academic quality of applicants has risen dramatically in recent years and 75% of successful applicants are female. The data show that a significant proportion of DGO applicants are native Irish speakers from "Gaeltacht" (areas in Ireland where the Irish language "Gaeilge" is the vernacular). There has been a severe shortage of applicants with qualifications in certain subject areas, in particular in Sciences, Mathematics and European languages. Drawing on findings from this study as well as on national statistics and educational policy documents, this paper discusses how changes to the DGO selection process may contribute to better meeting the staffing demands in SLIM schools in Ireland.