UK training providers offer a range of high-quality pre-service and in-service qualifications for English language teachers, as well as many degree-level and short courses on aspects of English language teaching.

Further information is given here about these courses and qualifications according to their relevance to different levels of skills:

• Basic skills
  For trainee teachers, teachers in the early years of their career, or experienced teachers who are beginning to teach English
• Developing skills
  For teachers of English with more experience
• Specialist skills 
  For highly experienced teachers who are taking on more specialist, expert roles

Outside the UK, British Council centres round the globe provide face to face and online teacher training courses.

The British Council has produced an education information sheet on studying English language teaching, which gives guidance about training courses: http://www.britishcouncil.org/learning-infosheets-english-teaching.pdf