The School has a wide remit embracing all of the Celtic languages and all periods. The bulk of its research has been on the history of the Irish language and its literature from the earliest times onwards. Among the School’s core duties are: the cataloguing of Irish manuscripts; the publishing of Irish texts from the manuscripts; the study of the grammar and development of Irish over time; the recording and study of spoken Irish dialects; the contribution of literature in Irish to the history of Irish society (for example, the early Irish law tracts); and similar research within the other Celtic languages.