Online Course Recognized by TESL Canada and ACTDEC UK
Recommended by School Directors Worldwide!

Tuition Fee: £596

Save £120 when you add a 20-hour specialist on Teaching English to Young Learners, Teaching English Online, Teaching Business English, or Teaching IELTS.

Entry Requirements

  • Internationally recognized
  • Fully online!
  • Personal tutor approved by TESL Canada and ACTDEC UK
  • Video tutorials and task-integrated recorded ESL lessons
  • Free job placement assistance
  • Includes all course material (printable/online/mobile)
  • Optional: 50-hour Practicum



Knowing how to create lesson plans using different formats and approaches is the foundation for creating an award-winning curriculum! The 250-hour TESOL Diploma program will teach you how to use various lesson planning formats for different levels, how to use various approaches within the Communicative Language Teaching method, and how to fully replace the textbook with authentic material. By the end of this course, you will have the skills to adapt to any curriculum in the world and customize the lessons to your students’ needs. This program also provides the most comprehensive training in grammar and phonology.

The 250-hour TESOL Diploma is an extended version of the in-class Trinity CertTESOL that Coventry House International offers in Toronto and is recognized by TESL Canada on completion of a separate Practicum module.


International Recognized TESOL Certification

This course has been evaluated and accredited by two separate, independent accrediting bodies: The UK-based Accreditation for TESOL Distance Education Courses (ACTDEC) and TESL Canada.

250-hour TESOL Diploma

Upon successful completion of all exams, tasks, and assignments, you will receive a 250-hour TESOL Diploma and a transcript with your marks awarded by Coventry House International – OnTESOL in Toronto, Canada.

TESL Canada

TESL Canada Professional Standard 2

Graduates who complete the 50-hour Practicum, have a university degree, and are native English speakers (non-native speakers must get a valid proficiency score) are eligible for TESL Canada Professional Standard 2 certification.

TESOL Accreditation - ACTDEC


Those who complete the 250-hour TESOL Diploma course will receive an ACTDEC Level 5 certificate under the seal of the Council.


There are a total of 3 exams, 19 assignments, and 10 tasks in this course.

Duration: The online 250-hour TESOL Diploma program was designed for trainees who need to take a TESOL certification course at their own pace in order to meet other work or study commitments. The minimum time necessary to complete this course is 2 months. The maximum time given to complete this course is 8 months.


After completing this module, you will understand complex grammar structures and be able to:

  • Identify common students’ mistakes.
  • Answer students’ grammar questions.
  • Produce effective grammar lesson plans at different levels in the methodology module.


This module will take you through all the stages of planning and delivering effective ESL lessons. It will provide you with the ability to:

  • Evaluate and use various approaches within the Communicative Language Teaching method (Communicative Approach, Integrated Skills, and Task-based Learning) for teaching grammar, vocabulary, pronunciation, speaking, writing, listening, and reading lessons.
  • Use different lesson planning models (PPP, ESA, TTT, and TBL) for different ESL levels (Beginner, Intermediate, Advanced, etc.).
  • Supplement or fully replace the ESL textbook using authentic material and improve the curriculum with lesson plans that meet your students’ needs.
  • Reflect on different testing and assessment strategies.


Gain an in-depth understanding of phonological features (articulation of sounds, linking sounds, intonation, assimilation, elision, etc.) to be able to identify students’ pronunciation problems and use various techniques to correct students’ oral mistakes.

COURSE REVIEW: 250-hour TESOL Diploma


“As a graduate of the OnTESOL program, I am happy to recommend it to teachers or potential teachers. Many of our staff at our school have taken the OnTESOL program. We look for teachers who come from quality teaching programs. Seeing OnTESOL certification on a resume means we know the individual has the foundation to become a great teacher”.

James Rice

School Director – Connect Language School (Canada)

“I completed OnTESOL’s 250-Hour TESOL Diploma course, and, sure enough, that boost to my credentials combined with positive references from my time with ADEC got me a much better paying position with ADVETI the following school year. I’ve since been able to certify as an IELTS examiner, largely because of my TESOL diploma, which in turn has made me a more attractive candidate to the universities and colleges. Honestly, pursuing my TESOL diploma through OnTESOL was one of the soundest investments I’ve made towards my career as an educator”.

Greg Askew

Teaching in the United Arab Emirates

What’s included in the tuition fee?



An internationally recognized TESOL Diploma with transcript mailed to any location in the world.

tutor support

professional tutor support

An experienced teacher trainer will be assigned to assist you throughout the program. Your tutor will provide you with extensive feedback on every assignment to help you improve your teaching methods.

OnTESOL only hires teacher trainers with more than 10 years of experience in the ESL classroom and more than 5 years of experience in CELTA, Trinity CertTESOL, or TESL Canada approved courses. Some of our tutors have more than 30 years of experience in the industry! All our tutors are approved by TESL Canada, so you are guaranteed to receive professional tutor support from a qualified and experienced teacher trainer.




Job Assistance in the Top Destinations!

Our job assistance package is completely free of charge and all the teaching jobs are fully paid. We will never charge you anything to help you find a job. Furthermore, our graduates receive free assistance with preparing their resume and getting ready for the job interview upon request.

In Asia, you will even get paid airfare and accommodation! Some of the organizations that have trusted us with their recruitment services are English First, Aston English, Gaba Japan, MY English School, EPIK, Amslink, BFITS Thailand, VIPKIDS, 51 Talk, QKids.

In Canada, we are the largest course provider of TESL Canada approved programs. Major language schools from Toronto, Vancouver, Montreal, Calgary and Halifax have recommended our course for their teachers and contact us often to hire our graduates.

In Europe and Latin America, we will provide you with a list of schools and our recruitment team will help you find recent job ads upon request.

optional Practicum


The 50-hour Practicum is separate and optional. It’s perfect for people who want to obtain supervised teaching experience and complete a teaching practice module after the TESOL Diploma program. Graduates who wish to pursue TESL Canada accreditation must complete the 50-hour Practicum.

The 50-hour Practicum module consists of 30 hours of class observation and 20 hours of supervised teaching practice with adult ESL students of different levels.

There are two options for completing the Practicum:

  1. OnTESOL can help you set up the Practicum in Toronto, Montreal, Vancouver, Halifax, or Edmonton for a fee (Our partners charge between $700 and $900 for the 50-hour Practicum).
  2. You can also complete the Practicum anywhere else in the world or in the cities mentioned above if you are already teaching at a school or you have access to an ESL class.  OnTESOL will approve the teacher, provide the Practicum booklet with guidelines, moderate the reports and lesson plans, and issue the Practicum certificate at no extra cost. Graduates can complete the Practicum in any country, whether at an ESL school, community center that offers ESL classes, LINC program, or TESOL/TEFL institute. The Practicum must be supervised by a teacher with over 2000 hours of teaching experience and an advanced TESOL/TEFL certificate with Practicum (TESL Canada, Trinity CertTESOL, CELTA, TESL Ontario, or SIT TESOL). The students who participate in the Practicum must be older than 18. TESOL Diploma graduates who prefer this option are responsible for finding a qualified teacher who meets the requirements mentioned above and arranging any fees related with supervising the Practicum.

There isn’t a deadline for completing the Practicum, so it is possible to complete this module for free after obtaining employment. Some TESOL institutes offer the Stand-Alone Practicum for a fee. Visit tesl.ca for a list of TESL Canada course providers in different provinces.  Some language schools in Canada offer the Stand-Alone Practicum to our graduates, but they charge a fee to those who are not going to enter into a working relationship with them.

250-hour tesol DIPLOMA

register today

Tuition Fee: £596

Save £120 when you add a 20-hour specialist on Teaching English to Young Learners, Teaching English Online, Teaching Business English, or Teaching IELTS.

Entry Requirements

  • Internationally recognized
  • Fully online!
  • Personal tutor approved by TESL Canada and ACTDEC UK
  • Video tutorials and task-integrated recorded ESL lessons
  • Free job placement assistance
  • Includes all course material (printable/online/mobile)
  • Optional: 50-hour Practicum


TESOL Certification: Prior TESOL or TEFL certification is not required to take the 250-hour TESOL Diploma.

Teaching Experience: Teaching experience is not required to take the 250-hour TESOL Diploma.

University Degree: As of October 29, 2020, a university degree is required to enrol in the 250-hour TESOL program. If you do not meet this requirement, you may register in the 120-hour Advanced TESOL Certificate course.

Native Speaker Requirement: The TESOL Diploma course and TESL Canada Professional Standard 2 certification are open to native-English speakers from Canada, the USA, the UK, Australia, New Zealand, and South Africa. Non-native speakers may take the TESOL Diploma course and receive the certification awarded by Coventry House International-OnTESOL and/or ACTDEC UK Level 5 accreditation, but those who wish to pursue TESL Canada accreditation are informed that they must obtain a valid proficiency score (TOEFL or IELTS) before applying for TESL Canada Professional Standard 2 certification.


In order to be eligible for TESL Canada Professional Standard 2 accreditation, a candidate must meet ALL the following requirements:

  • 250-hour TESOL Diploma course by Coventry House International – OnTESOL.
  • 50-hour Practicum.
  • University degree from Canada or equivalent (If you completed your degree in another country, you will need to get your documents assessed by WES or CES and send the equivalency assessment to TESL Canada).
  • 21+ years old.
  • Native-English speaker from Canada, USA, UK, Ireland, Australia, New Zealand, or South Africa. Non-Native speakers must have a valid IELTS Academic (Overall 7 with a minimum of 7 in each skill area) and TOEFL iBT (Overall 101 with a minimum of 23 in Listening, 24 in Reading, 27 in Speaking  and 27 in Writing).