Discover Trinity TESOL

What do TESOL and TEFL mean?

TESOL stands for 'Teaching English to Speakers of Other Languages'. Another similar term is TEFL, 'Teaching English as a Foreign Language'. TESOL and TEFL learning programmes are English language courses for students whose first language is not English.

TESOL or TEFL teacher training courses leading to TESOL or TEFL qualifications are for people who wish to become English language teachers. Many employers require their teachers to have internationally respected TESOL qualifications such as Trinity's CertTESOL in order to teach at their institutions. Read more about where a Trinity TESOL qualification can take you.,,,

Support for English language teachers

Trinity's TESOL qualifications are widely accepted internationally by state and private sector teaching institutions including British Council-accredited organisations in the UK and around the world. 

Our qualifications are designed to support teachers throughout their careers — from early practitioner to experienced professional. Read more about our range of qualifications on this website, and then fnd a course near you.

Support for TESOL training course providers

Trinity TESOL courses are available through over 150 Trinity validated course providers around the world. Trinity provides support for course providers to help them set up and deliver Trinity qualifications, together with training and resources for teachers and learning centres. Trinity also runs regular CPD workshops on different aspects of English language teaching and ESOL assessment literacy — visit to find out more.

Become a training course provider

Find out more about becoming a validated TESOL course provider for Trinity qualifications.

Download a Trinity TESOL overview leaflet

Download an overview factsheet


Trinity TESOL qualifications

Trinity TESOL suite of qualifications


The Trinity Certificate in TESOL (CertTESOL) is an initial teaching qualification that provides a firm foundation for English language teaching. It is availableas a part-time, face-to-face, online, or blended course through a validated course provider. Find out more...


The Trinity Diploma in TESOL (DipTESOL) is an advanced, internationally respected qualification for experienced ESOL/EFL teachers who want to refine their expertise and take their career to a more senior level. Find out more...


The Trinity Teaching Young Learners Extension Certificate (TYLEC) is designed to equip English language teachers with the knowledge and skills they need to teach young learners aged 7–12 years. Find out more...


The Trinity Certificate for Practising Teachers (CertPT) promotes the acquisition and refinement of specialist skills needed to develop and use effective teaching resources with professional insight. Find out more...

Find a course

Visit our Find a course page to discover where you can take a course leading to a Trinity TESOL qualification.











The Trinity Certificate in TESOL is an initial teacher training qualification that will equip participants with the basic skills and knowledge they need for their first post as an English language teacher. 


The Trinity Certificate for Practising Teachers (CertPT) promotes the development of specialist pedagogical knowledge and skills to support the professional development of English language teachers.


The Trinity Diploma in TESOL is a qualification for experienced teachers of English language, designed to encourage the development of professional knowledge and expertise and refine practical teaching skills.


The Teaching Young Learners Extension Certificate (TYLEC) is an in-service qualification designed to equip qualified teachers with the skills and knowledge to teach 7-16 year-olds.

Trinity Teach English Online

Trinity Teach English Online is a flexible online self-study course that can lead to a Trinity Certificate in Online Teaching (CertOT).

Legacy qualifications

Find details of other TESOL teaching qualifications previously awarded by Trinity College London.

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