The Diploma in Teaching English to Speakers of Other Languages (DipTESOL) is an internationally respected, widely available qualification for experienced teachers of ESOL/EFL. 

The DipTESOL is accepted by the British Council as a full English Language Teaching (or ‘TEFL’) qualification for teachers in its accredited teaching organisations in the UK and in its own teaching operations overseas. Having the DipTESOL enables holders to have roles such as examiners, teacher educators and centre managers/directors of studies.

Key features

  • Flexible course delivery - part-time or blended study options

  • Total qualification time - 150 hours’ guided learning + 450 hours’ self-study

  • Four assessment units - assessment focus is on the application of theory in practice, developing an understanding of teaching contexts, and on individual professional development 

  • Trinity validated course providers - Trinity TESOL courses are available through over 150 validated course providers around the world

Content and assessment

Each unit allows participants to focus on English language teaching in specific contexts — for example, English for specific or academic purposes, for young learners, for  business English, or teaching within CLIL (content and language integrated learning) settings:

  • Unit 1: Language, teaching and learning
  • Unit 2: The teacher as a developmental, reflective practitioner
  • Unit 3: Phonological theory in classroom practice
  • Unit 4: Learner analysis, preparation, delivery and self-evaluation in teaching

The DipTESOL is regulated in England by Ofqual and registered at Level 7 on the Ofqual Regulated Qualifications Framework, the same level as master’s degrees and many other post-graduate qualifications.


Course content

Read about the four units the course is delivered and assessed through.

Entry Requirements

Check you meet the entry requirements for this course.


Career prospects

Find out about the opportunities doing this course could open up to you.


DipTESOL exam dates

Find out when the next exams will be. 

Keep in touch

Make sure you don’t miss the latest news from Trinity College London. Sign up for email updates about your subject area.

Back to top