How does my RSA Diploma for Overseas Teachers of English (DOTE) relate to DELTA? Can it be classed as a postgraduate level qualification?

The DOTE, which was offered until 2002 and then revised to form part of the Cambridge Diploma in English Language Teaching to Adults (DELTA), is indeed a postgraduate level qualification. The current DELTA sits at Level 5 on the National Qualifications Framework (NQF) and although the DOTE itself was not mapped to the NQF it was set at the same level and standard as the DELTA. The DOTE also differed in that it was aimed at non-native speakers of English whereas the revised DELTA can be taken by both native and non-native speakers.