Advanced 250-hour TESOL Diploma

Get the best training for a rewarding teaching career!

Qualify for the Best Jobs in the World with the TESOL Diploma!

250-hour TESOL DiplomaOur TESOL Diploma graduates are teaching English in the best programs in Canada, the United Arab Emirates, Hong Kong, and Europe. Many teachers who completed this course are now working as IELTS examiners, university professors, and school directors thanks to the training that they received from Coventry House International-OnTESOL.

Testimonial – Greg Askew – Teaching in the United Arab Emirates: “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”.

How Will The 250-hour TESOL Diploma Help You in Your Career?

TESOL Diploma course online Knowing how to create lesson plans using different formats and approaches is the basis 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 design a full curriculum using fun and effective lesson plans. This program also provides the most comprehensive training in grammar and phonology.

Testimonial – James Rice – Director of Studies at Connect Language School, Canada: “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”. 

Save up to $300! Get 50% OFF on all specialist courses when you enroll in the TESOL Diploma course. Upgrade your skills and credentials with the TEYL, Teaching Business English, and Teaching IELTS specialists!

International Accreditation: Get Triple Certification!

TESOL Diploma Online Better than CELTAUpon 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. Graduates will also be eligible for TESL Canada Professional Standard 2 and/or ACTDEC UK Level 5 accreditation after meeting their accreditation requirements.

Advanced TESOL Diploma Syllabus:

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


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.

Save up to $300! Get 50% OFF on all specialist courses when you enroll in the TESOL Diploma course. Upgrade your skills and credentials with the TEYL, Teaching Business English, and Teaching IELTS specialists!

What’s Included in OnTESOL’s 250-hour TESOL Diploma?

Tuition fee: CND$995 (Approx. US$789, EUR 675, GBP 545)

    • Online / mobile / printable course material.
    • A qualified and experienced teacher trainer, who will correct your work, provide you with extensive feedback, and answer your questions.
    • Video tutorials and sample ESL lessons.
    • Task-integrated videos.
    • An internationally recognized TESOL Diploma with transcript mailed to any location in the world.
    • Access to more than 1,000 ESL schools in the top destinations.
    • Recruitment in China, Indonesia, and Russia by English First.
    • Recruitment  in China by Aston English.
    • Recruitment in South Korea by official EPIK recruitment agency.
    • Recruitment in Japan by Gaba.
    • Recruitment in Thailand by T.S.E.T.A.
    • Recruitment in Vietnam by Amslink

*(For free job recruitment services, candidates must meet job and immigration requirements)

TESOL Diploma Entry Requirements

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: A Bachelor degree is not required to take the TESOL Diploma course and graduate with the 250-hour TESOL Diploma issued by Coventry House International-OnTESOL. However, candidates who wish to become eligible for TESL Canada Professional Standard 2 certification must complete a BA degree in any area before applying for TESL Canada accreditation.

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.


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.

Practicum - Upgrade Your Credentials!

The 20-hour Practicum is separate and optional. It’s perfect for people who want to obtain supervised teaching experience and add a 20-hour Practicum to their TESOL Diploma. Graduates who wish to pursue TESL Canada accreditation must complete the 20-hour Practicum. After September 2017, TESL Canada will require completion of a 50-hour Practicum for their Professional Standard 2 accreditation.

The 20-hour Practicum module consists of 10 hours of class observation and 10 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, Barrie, Montreal, Vancouver, Halifax, or Edmonton for a fee (Our partners charge between $350 and $600 for the 20-hour Practicum and between $650 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 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.

Find Sample Videos on Using Authentic Material, Task-Based Learning, and the Communicative Approach

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