From Teflpedia

DTE(E)LLS is an acronym for Diploma in Teaching English (ESOL) in the Lifelong Learning Sector. It was one of the University of Cambridge TEFL Qualifications.

The qualification was discontinued in 2012.[1] It used to be a requirement for qualified status for working in the life long learning sector in the UK. Roughly speaking the DTE(E)LL was the ESL equivalent of the EFL qualification DELTA.


  1. University of Cambridge, Cambridge English Language Assessment, PTTLS, DTE(E)LLS and ADTE(E)LLS