Why Study TESOL Online with OnTESOL?

The lesson planning skills that English teachers learn in a quality TESOL, TESL, or TEFL course will have long-lasting impacts on their careers. Knowing how to use industry standard lesson planning frameworks such as Presentation- Practice-Production (PPP), Engage Study Activate (ESA), Task-based Learning (TBL), and Test-Teach-Test (TTT) is vital. This skill will help English teachers to adapt to any classroom situation in the world, whether they want to supplement the ESL textbook or create a full ESL lesson plan from scratch.

While there are hundreds of online TESOL / TEFL / TESL courses offered worldwide, most courses provide basic introductory knowledge through semi or fully automated assignments instead of practical skills through advanced lesson planning assignments with feedback from an accredited and experienced tutor.

At OnTESOL, our mission is to provide trainees the skills they need to become reflective, adaptive, and independent English teachers. Our TESL Canada-approved and CELTA-equivalent online TESOL courses offer practical lab assignments that require trainees to complete detailed lesson plans using various frameworks.

The internationally recognized online TESOL courses offered by OnTESOL include tutor feedback and support, all the required textbooks, and a wide variety of videos for trainees to watch at their own pace. For those who prefer a more interactive and live experience, OnTESOL offers additional workshop-style live lectures via Zoom.

Furthermore, OnTESOL graduates can take a separate Practicum module in Canada or Stand-Alone anywhere in the world to upgrade their credentials with certified teaching experience.

Last but not least, OnTESOL offers free job assistance, including a master list of schools, resume support, and job board.


Our online TESOL courses are recognized by TESL Canada, TESL Ontario, and ACTDEC. This means that you can use your OnTESOL certificate to teach English in Canada, receive Government of Canada authentication to apply for the work visa required for jobs abroad, or apply for online teaching jobs.

World-Renowned TESOL Online Since 2003!

As a spinoff of Toronto-based Coventry House International, OnTESOL adapted Coventry’s Trinity CertTESOL-approved in-class syllabus to offer quality online TESOL / TESL / TEFL certification courses that are recognized for English teaching jobs in Canada, online and abroad. The 120-hour TESOL Certificate offers the same level of training in adult TESOL theory and methodology training as an in-class Trinity CertTESOL or CELTA course, while the 250-hour TESOL Diploma offers more training than a standard 4-week course. OnTESOL further developed its own set of specialist courses for those planning to teach English in specific classroom situations such as young learners, Business English, IELTS Preparation Courses, and online.

All course material is included in the tuition fee.

  • Printable and Online TESOL Textbooks
  • Tutor Feedback and Support
  • Video Tutorials
  • Recorded ESL Lessons for Class Observation
  • Lab Preparation Videos
  • FAQs Videos
  • Interactive Practice Quizzes to Keep You Engaged and Monitor Your Progress
  • Live Workshop (FREE for those who enroll before May 31)

Study for your TESOL certification at your own pace.

Set your own schedule with OnTESOL. Receive a TESOL certification that is valid for jobs at language schools in worldwide or online.    

Study from the comfort of your home or on the go.

Use any computer, tablet, or mobile device to study TESOL online with OnTESOL.

Save on your TESOL course.

The average in-class 120-hour TESOL certification course costs CA$2,000 / US $1,500. The accredited online TESOL courses offered by OnTESOL start at CA$650 / US$515.

Get Personalized Tutor Support

TESOL online with tutor support. All our tutors are approved by TESL Canada to mark your lesson plan assignments and offer you feedback. You can contact your tutor through your student portal at any time to ask questions on the course materials or to request more feedback on your lesson plan assignments. Our format allows you to take the time you need to engage in an academic conversation with your tutor until you understand the material and you are comfortable with submitting the next assignment.

Self-Paced Asynchronous and Semi-Asynchronous Live Options

The main benefit of studying TESOL online is that you can take the time you need to grasp all the concepts in the TESOL course. Each module will open in sequence as your progress through the course. You will pass the course and receive your TESOL certificate after passing all the assignments and exams. We don’t count the time you take to study each module and there aren’t any limits on each module (The only time limit is the course deadline). The self-paced asynchronous format offers you more flexibility to study from the textbook and videos, review previous feedback, ask questions to your tutor, and submit your assignments when you are ready.

NEW! 10-hour Live Lesson Planning Workshop: Add the live workshop to attend live Zoom lectures, ask questions, and participate in group activities with other trainees in preparation for the lesson plan lab assignment. FREE for those who enroll with OnTESOL before May 31

Complete a Teaching Practice Module Anywhere in the World

You can complete a separate Practicum module anywhere in the world after the online TESOL course. In this module, you will get to observe real classes and also teach classes with real ESL students. There isn’t any deadline to complete this module, so you can graduate with a TESOL certificate and upgrade your credentials when you are ready.

Which Online TESOL Certification Course is for Me?

We only recommend the 250-hour TESOL Diploma program for experienced ESL teachers who want to dive deep into grammar, phonology, and the theory and methodology of TESOL.

The Advanced 120-hour TESOL Certificate program is perfect for entry-level and experienced teachers who need to meet job requirements with an accredited TESOL certification course and don’t have the time required to complete an intensive 250-hour program.


The general requirement for ESL teaching jobs is a Bachelor degree and an accredited 120-hour TESOL, TESL, or TEFL certificate.

The Advanced 120-hour TESOL Certificate offered by OnTESOL is as advanced as a CELTA or Trinity CertTESOL course. This 120-hour course includes 3 practical lesson plan lab assignments. While most other online TESOL / TEFL courses cover lesson planning in an introductory manner, OnTESOL trainees are required to complete detailed lesson plans during assignments to support their development as reflective and adaptive teachers.

Choose Your TESOL Course


For entry-level, gap year abroad, K-12, language schools, International Schools, IELTS Preparation Courses and Business English teaching jobs, we recommend combining the 120-hour Advanced TESOL Certificate course with one or more 20-hour online specialists.

Save CA$199 / US$150 on each 20-hour online specialist when you register to study TESOL online with OnTESOL.