
120-Hour Advanced TESOL Certificate (Online)
by: OnTESOL
Get all the benefits of an advanced in-class TESOL/TEFL course from the comfort of your home! As an OnTESOL trainee, you will have the opportunity to create full lesson plans that integrate grammar and vocabulary with speaking, listening, reading, and/or writing lessons. The assignments in the OnTESOL course will also prepare you to use authentic materials and communicative activities. Your OnTESOL certificate will show employers that you have the skills to adapt quickly to their curriculum needs. After just 3 months on the job, your employer will see the impact of your lesson planning skills on the classes you are teaching. After one year, OnTESOL graduates are able to help schools get better organized with their curriculum and help other teachers adapt the textbook with effective materials. The online 120-hour TESOL course offered by OnTESOL offers the same level of training as a 4-week CELTA. If you add the 20-hour TEYL specialist ($200 OFF when you add it to a TESOL course), you will receive the same level of training as the Trinity CertTESOL course offered by Coventry House International in Toronto.
Get all the benefits of an advanced in-class TESOL/TEFL course from the comfort of your home! As an OnTESOL trainee, you will have the opportunity to create full lesson plans that integrate grammar and vocabulary with speaking, listening, reading, and/or writing lessons. The assignments in the OnTESOL course will also prepare you to use authentic materials and communicative activities. Your OnTESOL certificate will show employers that you have the skills to adapt quickly to their curriculum needs. After just 3 months on the job, your employer will see the impact of your lesson planning skills on the classes you are teaching. After one year, OnTESOL graduates are able to help schools get better organized with their curriculum and help other teachers adapt the textbook with effective materials. The online 120-hour TESOL course offered by OnTESOL offers the same level of training as a 4-week CELTA. If you add the 20-hour TEYL specialist ($200 OFF when you add it to a TESOL course), you will receive the same level of training as the Trinity CertTESOL course offered by Coventry House International in Toronto.
Program Highlights
Land English teaching positions online, in Canada, the US, and other countries worldwide with your 120-hour course.
Become qualified for ACTDEC UK Level 3 and/or TESL Canada Professional Standard 1 accreditation after meeting requirements.
Set your own study schedule and receive personalized support from an experienced tutor.
Undergo supervised teaching experience with the separate Practicum after completing our online TESOL certificate.
Receive a 120-hour Advanced TESOL Certificate and transcript awarded by Coventry House International-OnTESOL upon successful completion of all exams and assignments.
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Quick Details
- Online
- Multiple Countries
- Throughout the Year
- TESOL
- American
- Canadian
- Australian
- South African
- Kiwi
- All Nationalities
- British
- Irish
Awards



Program Reviews
Hear what past participants have to say about the programs
Overall Rating
Total Reviews
Excited journey
August 19, 2026by: Heba Awad - JordanOnTESOL provided a well-structured and practical course. The modules were clear and useful, and my tutor James Green was supportive. I feel more confident and prepared to teach ESL. The course offered valuable knowledge, practical teaching strategies, and helpful resources that I can apply in real classroom settings. I would recommend it to anyone interested in starting a career in ESL teaching.
Great material, greater tutor!
May 24, 2026by: Anas Sawah - SyriaFrom the very first second that I spent attending the great Dr. Margaret Hurley's live grammar session, I knew I did right by myself by choosing this course. I managed to learn so much in such little time. The material, though a little outdated given the fact that this course was launched in 2003, was enriching and easily bettered me as an English teacher. Add to that, the accreditations of the certificates that this course provides you with once you are done are the best examples of money being well-spent.
Very helpful staff who want you to succeed
April 23, 2025by: Amy Butcher - CanadaOverall, this certificate will give you a very professional grounding in TESL. After taking the 120-hour course and other small certificates, I felt very prepared to start teaching right away. The alumni support was also a big plus and they give you great tips to ace your interviews. I am very happy with my experience at OnTESOL and definitely recommend it.
A Fantastic Learning Experience
March 07, 2025by: Mahtab Afrasiabi - IranThe TESOL course was a fantastic experience for me as a newcomer. It deepened my understanding of lesson planning and student engagement activities. The curriculum was well-structured, covering essential topics such as grammar, phonology, methodology. lesson planning, classroom management, and assessment techniques. The instructors were knowledgeable and supportive, providing constructive feedback that helped me improve, especially in writing lesson plans.
Great online TESOL course!
February 24, 2024by: Ivy Abbott-Charles - CanadaI was very happy with this program! I actually added a short course, Teaching IELTS, onto the 120-hour course, and it was a really well-rounded education. There was a lot of reading, so you have to be self-motivated. There are also videos to watch, and written assignments. Something came up that prevented me from completing the course in the set period of time, and I was given an extra few months to finish everything up. I was grateful for the ability to get a high-quality certification online while continuing to work. I did my practicum at a local immigrant support organization, and it went really well. I've been using the skills I gained in my current work as a freelance ESL tutor.
It's a learning curve
November 16, 2023by: Karen Klassen - CanadaSince completing the 120-Hour Advanced TESOL Certificate I have been teaching privately online. While I learned a lot in the program, I can't say that it specifically prepares one for that - the focus is much more on teaching classes of students. And I think there is a general assumption that one will be likely using a syllabus and/or at least some materials provided by the program within which one is teaching. I felt I learned a great deal about lesson planning and just how much advance preparation and detail are necessary for teaching successfully. In order to teach privately online, I have needed to do a lot of grammar study in addition to what was presented in the program as well as to spend time amassing materials to use (the course was very helpful with its recommendations of good textbooks and websites). I am grateful for all I learned in the program, it certainly provided me with a good basis, but I am very conscious of the need to continue studying and learning in order to teach well.
My future trip to Turkey
September 28, 2023by: Valeriia Primak - RussiaThe main reason why I decided to enroll the course is my desire to become an English language teacher. I would like to start working online as a teacher and to move to Turkey. I used to be an English teacher and I graduated from the Pedagogical University. The last time when I taught students was 8 years ago, so I needed to refresh my knowledge in terms of Methodology. Thanks to your course I am packed with lots of strategies and methods of teaching the main language skills and sub-skills.
Online school with an in-class experience
September 25, 2023by: Laura DeGasperis - CanadaI was hesitant to take this course online with the fear that I wouldn't complete it, or procrastinate. I was definitely proved wrong. The amount of lessons and content was very extensive and detailed. There was a great combination of reading, video lectures, online real time workshop and activities to help you along the way. For someone like me who struggled academically in the past I felt it was easy to navigate and go at my comfortable pace. I really appreciated the availability of my mentor and tutor Caitlyn. She would help me with any questions in a timely manner and give extensive detail so I am never confused about what was expected of me. The assignments were a great way to see if you are real world ready for teaching and I feel confident with the feedback and guidance from my tutor. I succeeded and passed with an A average, which was a first for me. I highly recommend this course for anyone interested in teaching ESL and don't have time to go to an actual school to study.
It was a great learning experience!
September 13, 2023by: Jerry Suntaxi - CanadaThe 120-Hour Advanced TESOL course has been an eye-opening journey that I have really enjoyed and learned a lot from. The course content was both comprehensive and practical, offering a well-structured curriculum that effortlessly transitioned theory into real-world teaching scenarios. From grammar essentials to classroom management, it covered all bases, equipping me with valuable insights and boosting my teaching confidence. The course offered a wealth of resources and materials, which I could explore at my convenience. The instructors provided clear guidance and support through well-crafted course materials. This approach allowed me to adapt my study schedule to my busy life, ensuring that I could balance work, life, and learning effectively. My expereiecne has been amazing, it has provided me with the tools and knowledge needed to embark on a rewarding career in teaching English to speakers of other languages.
Good experience and great material
June 26, 2023by: Sheldyn Asman - United StatesI had a really good experience with Ontesol. I took the 120-hour advanced TESOL course and gained a lot of understanding of how to organize a lesson plan and a class. You learn everything from proper grammar to how to organize and create engaging themes for lesson plans. The instructors were very helpful with answering questions as well as giving constructive feedback on each assignment. I would definitely recommend it to someone interested in TESOL.
New teacher!
June 21, 2023by: Josephine Guastella - CanadaHaving never taught, OnTesol’s approach is well organized providing students with sufficient training and support.Great combination of assignments and workshops building knowledge and teaching skills.
Choosing ONTESOL was a great decision!
May 24, 2023by: Priscilla Villao Cabrera - EcuadorI have had a great experience with ONTESOL. From the very beginning, I sent an email with my query, and right after I signed up for the course. The Admin Team was very prompt to answer my questions about the course before signing up and so was the tutor. I had a tutor name Aaron and it was very delightful to correspond with him. Furthermore, he helped me to navigate the course seamlessly. The course was very beneficial to me and I feel very equipped to start my new career as an ESL teacher. Currently, I am working on a 20-hour Teaching English Online which I am very excited about as I believe it is going to provide the tools I need to start in the online teaching world. I am confident that I will eventually get the opportunity to teach in a classroom. I would highly recommend OnTesol to anyone looking for TESOL certification.
I appreciated the variety!
May 07, 2023by: Adam Bunin - CanadaI was so pleased that the teaching material in the TESOL course was varied for each lesson. I recognize that each of us has our own learning style, and some of us learn more effectively when one teaching strategy is used, while others may prefer something different. This is the reason I appreciated the variety of teaching methods in the TESOL course. Written material was supplemented with helpful videos. Charts and diagrams were used to help illustrate important points. These varied approaches are so important in meeting the learning needs of all. As a visual learner, I appreciated the videos and illustrations and found that they were effective in presenting new concepts or in providing additional learning material to supplement information that had been presented earlier.
Wonderful training and very insightful
February 17, 2023by: Mariam Al-Deri - CanadaI will apply what I've learned every day at work and in my personal life . Miss Fiona was very active and her feedbacks were very helpful and highlighted the areas of my writing that I need to be more aware of and work on going forward. After my Tesol course, I became more aware of the gaps in my lesson plans and improved my writing capabilities, it also had a huge impact on my performance and confidence as a certified teacher because it allowed us to focus on relevant issues that I truly need!
A very thorough course with excellent feedback
February 10, 2023by: Dan Watt - CanadaThe OnTESOL 120-hour course is very thorough. Each stage is designed to help the future instructor understand how to teach and design a lesson. The cost of the course is significantly less than it should be. There is almost too much knowledge given in some of the stages.
Excellent experience!
January 23, 2022by: Juliana Crane - ColombiaI highly recommend this course, my experience was excellent! The materials are very easy to follow and understand but are also demanding which is exactly what you need to learn and grow. My tutor was amazing, she was always available to answer my questions and help me along the way. Since this is an international course, equivalent to a CELTA certificate, it will open doors for me anywhere I decide to teach. I definitely recommend it to anyone who is interested in taking a step further in their English teaching careers. Thank you for a fulfilling and enjoyable experience!
120h TESOL certification course
December 23, 2021by: Felix Vaillancourt - CanadaThe course's curriculum was torough and very well laid out. Because the course's direction was always very clear, I was never at a loss and I could always ask for assistance if I needed help with anything.
An extraordinary experience taking this course!
August 13, 2021by: Amy Saya - CanadaOnTESOL is literally FANTASTIC! I signed up to take this course near the onset of the pandemic, feeling like it was a good time to be resourceful and glean something new. I have always loved teaching English to my international friends when they have visited me in Canada, so I knew that taking a TESL certification would be a good use of my time! And boy was I rewarded with much joy through this experience! My instructors were great at being diligent and observant when marking my paperwork and essays. I was thankful for how they critiqued my work as it showed me that I was being molded into a good future TESL teacher. The material itself was beyond fascinating, and I believe it was so interesting to read and absorb because of the manner in which it was presented. With a combination of videos, easy to understand visuals, and well structured paragraphs, I found that it was enjoyable to read everything about English, from vocabulary and grammar teaching techniques to the phonetics and science of English. It was a blast! I also highly recommend taking any of the specialty courses after the TESL certification is complete. I registered for the TEYL (teaching English to young learners) course, and I do not regret it. This extra course will be a huge help in preparing me even further for teaching children English through the experience as a practicum teacher. If anyone is considering taking a TESL certification, words cannot express how much I recommend for you to sign up with OnTESOL. Above all the other programs I reached out to and researched (and believe me I spent weeks researching!!) this program has been my winner and I am thankful for them! The staff are great, always provide wise support, and are easy to access. Give them a try!
I learned so much!
July 08, 2021by: Beverley Barone - CanadaThe course content is fairly easy to understand especially since it has videos, charts, sample textbook pages, etc. You learn a wide variety of how to teach English and the course also gives you the opportunities to work with the skills and methods yourself. I had an amazing tutor. She really was there every step of the way with me, whenever I was unsure or had questions. Her feedback given with each marked assignment really did help me to see things from a different perspective and also see what I had missed and why. I truly learned and felt more confident with everything I learned throughout the course. I 100% recommend OnTESOL! every person I came in contact with throughout my time there truly were lovely and very helpful.
Great experience with OnTESOL
June 18, 2021by: Zihan Mao - CanadaI thoroughly enjoyed doing the 120-hour Advanced TESOL course, as I learned a lot from start to finish. The content was very well written and well organized. I gained more knowledge of language teaching skills and linguistics. My tutor was very responsible and provided me constructive feedback for my lesson assignments and lesson plans. In addition, the feedback and support from the staff was also very helpful.
Program Details
Learn all the nitty gritty details you need to know
Locations
- Online
- Multiple Countries
Types and Subjects
- Subjects & Courses
- TESOL
Availability
Years Offered: Year Round
- Throughout the Year
Age Requirement
18+
Guidelines
All Nationalities
Starts At
Program Cost Includes
- Course Materials
- TESOL Certification
- Transcript Fees
- Job Search Support
Qualifications & Experience
- High school graduate, diploma or the equivalent (for example: GED)
Accepted Education Levels
Application Procedures
- Online Application
Ready to Learn More?
Get all the benefits of an advanced in-class TESOL/TEFL course from the comfort of your home! As an OnTESOL trainee, you will have the opportunity to create full lesson plans that integrate grammar and vocabulary with speaking, listening, reading, and/or writing lessons. The assignments in the OnTESOL course will also prepare you to use authentic materials and communicative activities. Your OnTESOL certificate will show employers that you have the skills to adapt quickly to their curriculum needs. After just 3 months on the job, your employer will see the impact of your lesson planning skills on the classes you are teaching. After one year, OnTESOL graduates are able to help schools get better organized with their curriculum and help other teachers adapt the textbook with effective mater...

OnTESOL

OnTESOL
Ready to Learn More?
Get all the benefits of an advanced in-class TESOL/TEFL course from the comfort of your home! As an OnTESOL trainee, you will have the opportunity to create full lesson plans that integrate grammar and vocabulary with speaking, listening, reading, and/or writing lessons. The assignments in the OnTESOL course will also prepare you to use authentic materials and communicative activities. Your OnTESOL certificate will show employers that you have the skills to adapt quickly to their curriculum needs. After just 3 months on the job, your employer will see the impact of your lesson planning skills on the classes you are teaching. After one year, OnTESOL graduates are able to help schools get better organized with their curriculum and help other teachers adapt the textbook with effective mater...
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