What is the Delta?
The Cambridge Delta (Diploma in Teaching English to Speakers of Other Languages) is the most prestigious and widely-recognised British qualification in ELT. It is intended for teachers who already have basic training and substantial experience in teaching English as a foreign or second language, and who wish to review and develop their knowledge and practices, perhaps in preparation for more senior teaching roles. Candidates are expected to have a CELTA or equivalent and at least two years' full-time experience of teaching adult classes at a range of levels.
The UK Office of Qualifications and Examinations Regulation places the Delta at Level 7 of the Qualifications and Credit Framework – the same level as a Master's degree.
The Delta is made up of three separate modules, which can be taken in any order and over any time period. As the modules are taken separately, each module is independently certificated. A candidate successfully completing all three modules achieves the full Delta qualification.
The Delta Modules
Module One – the written exam
This module is more theoretical and focuses on the background to teaching and learning English in a range of contexts. Topics include: language acquisition; approaches and methodologies; analysis of language systems, language skills and learner problems; resources and materials; testing and assessment.
Assessment: a written exam of two 90-minute papers
Module Two – teaching practice
This module requires participation in a course with a practical focus on: professional development; analysis of language systems and skills, learner needs and problems; lesson preparation; lesson preparation, teaching and evaluation.
Assessment: a portfolio of four internally-assessed assignments, and a fifth assignment which is externally assessed by a visiting Cambridge English assessor
Module Three – the extended assignment
For this module candidates can choose from two options:
• Option 1: Extending practice and English language teaching specialism
This focuses on needs analysis, syllabus design, course planning and assessment in the context of a selected specialism.
• Option 2: English Language Teaching management
This focuses on situation analysis and planning, and implementing change in the context of a selected management specialism.
Assessment: an extended written assignment of 4,000–4,500 words
Module Two requires attendance at a course run by an approved Delta centre so that your teaching can be supported and assessed. There's no official requirement to do preparation courses for Modules One and Three – but it is strongly recommended!
You can find out more about the Cambridge Delta at