OnTESOL offers a wide variety of certifications to train their students on how to teach English as a foreign language. Learn more about OnTESOL online TESOL courses below.


United States


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Yes, I recommend this program

I liked that this course catered to my hectic schedule and that it was able to teach me new styles of teaching, lesson planning and improvements with my already existing teaching style. The tutors were available with any help or questions I had, and they were able to explain the material that I didn’t get. The practicum allowed me to be in real-life scenarios with students and was able to teach me problem-solving skills. Also, it made me more confident about myself and my abilities to teach various skills to my students. I liked it a lot! Good Experience overall!

What would you improve about this program?
Nothing that I could think of, but perhaps more staff to the job support team.
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Yes, I recommend this program

This has been an intense and rewarding journey for me. I say this because TESOL /teaching is a complete departure from my educational background. This course now gives me the potential to launch out professionally in the field of TESOL and even become a member of TESL Canada as this body recognizes the program. It is a lot of handwork and rigor
especially with the volume of assignments. This has made me a product of quality set for the practical experience of all I have learned from Ontesol. The fact that I am now able to create meaningful lesson plans is the spring board I need to enter into the classroom. I must not fail to mention the patience and immense support from my tutors, it was remarkable. I just completed the program and have been immediately contacted by the Recruitment and Graduate Services department.
Thank you Ontesol!

What would you improve about this program?
I would have liked to have substantial online (real time) video tutoring sessions along with a bit of reduction in the volume of reading texts provided with this program.
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Yes, I recommend this program

What I liked the most was how practical the online course was. Every assignment built on the previous topic and prepared me to write full lesson plans that would come in very handy for the Practicum and the job. My first week on the job was made so much easier by this course, and my planning skills really showed up as I became more creative along the way. The tutor guided me along the way, providing clear feedback. Ontesol was really the best choice.

What would you improve about this program?
I really liked the videos with recorded ESL lessons in the video folder. I liked how they put captions throughout the video to show how the lesson plan becomes a real lesson. I wish they had a few more videos like these because they were very useful.
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Yes, I recommend this program

I started looking for online TESOL certifications when I realized I didn't have time to take off from my job teaching English in Korea to get a CELTA. After thoroughly researching all the options, I decided to enroll in Ontesol's 250 hour Diploma + Practicum, and I am so glad I did! Having the freedom to complete the program concurrent with my teaching schedule was so convenient and helpful. Even though the program is rigorous, Ontesol's curriculum is well-organized and digestible, and the tutors are extremely helpful. Emails were always answered in a timely matter, and my questions were always thoroughly explained. My husband got his MA in TESOL when I was completing Ontesol's program and I noticed a lot of overlap in the material both programs covered, so when the website says the 250 hour certification goes beyond CELTA level, it is definitely true. I learned so much during my 7 months completing the course that I decided to continue on and obtain the 20 hour Practicum. Ontesol was very helpful in working with me to find a qualified supervisor so I could complete the practicum while teaching my regular classes here in Korea. Not only does my Ontesol TESOL Diploma make me a more qualified teacher for jobs overseas, but because Ontesol is recognized by TESL Canada, I am one step closer to becoming a certified Canadian ESL teacher which will help my employment opportunities when I do decide to return to North America eventually.

I really cannot recommend the Ontesol program enough for its high quality, convenience and great overall value. It is a great investment for any ESL instructor, regardless of location or prior qualifications. Thanks!

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Yes, I recommend this program

I completed the TESOL certificate and the Practicum with OnTESOL in Toronto. I am very happy with the quality of the course and the support I received from both my tutors. It was an intensive course and it took me about 2 months to do the whole thing. The online portion was very useful because it prepared me for the lesson plans I had to do during the Practicum portion. I had to take the Practicum to get TESL Canada accreditation and I would really recommend it to anyone who is considering starting a career because the feedback from the teacher trainer is very valuable. It really helps if you are a new teacher!

What would you improve about this program?
The course had about 12 videos and 3 of them are full ESL lessons. These videos helped a lot to see how a lesson plan becomes an ESL class because they are integrated with the assignments. I would recommend producing more of these videos!


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Staff Interviews

These are in-depth Q&A sessions with program leaders.

Clare Linton

Job Title
Recruitment Coordinator
Clare is OnTESOL's Recruitment and Graduate Services Coordinator. She supports all of our graduates to find the most fulfilling positions all around the world, as well as partnership acquisition with language schools, marketing and coordinating our job placement assistance program.

What is your favorite travel memory?

When I studied abroad in France for 8 months, 10 of my fellow peers and friends traveled to the Alps to stay in a wood cabin and go skiing for a week. The mountain views we had the privilege of seeing were incredible! I'll never forget lounging on top of the Alps on a Muskoka chair, suntanning, sipping on a beer and gazing at the incredible peaks of Chamonix!

How have you changed/grown since working for your current company?

I was responsible for carving out my role with OnTESOL back in 2017, so there have been many learning curves! I've learned to be capable of developing programs and systems with a bit of creative thinking and passion.

Working for an institute that provides education in an online setting has definitely shed light on my capacities as an innovator and passionate community builder. I've also learned so much about our students' and graduates' educational pursuits, online education, and about how to manage my time while working remotely.

What is the best story you've heard from a return student?

That our courses have opened the door for new and innovative positions around the world! So many of our return students love the in-depth knowledge they gain in the course and they always have nothing but amazing things to say about the attention, knowledge, and feedback they received from our tutors. So many of them come back to take another one of our courses because their first time around was such a positive and enlightening experience.

If you could go on any program that your company offers, which one would you choose and why?

I have in fact taken OnTESOL's 120-hour Advanced TESOL certificate! It's a wonderful course that blends theory and very hands-on, practical skill-building. I loved the lesson planning portion of the course and how the course actually built me up and prepared me to write lesson plans. I also loved that I didn't just write one lesson plan, but 4! It was extensive, but I left the course feeling so prepared to be an ESL teacher, which I did for a year after finishing the course!

What makes your company unique? When were you especially proud of your team?

I think there are many things that set OnTESOL out from the rest. I think one of the main things is that we see the programs we offer as academia. We don't simply pass every student who enrolls in our courses. We offer a grading and probation system to ensure you are receiving the highest standard of TESOL training.

As I mentioned above, our courses also offer much more lesson planning than the majority of TESOL courses. We also offer you training to use authentic material, like podcasts, YouTube and much more so that you can teach in a communicative way to your students, not simply rote memorization, which is highly outdated.

We also offer our students a very personalized experience. We are a mighty team of passionate TESOL educators and experts in online education, who want to see you complete our courses prepared to go and do something meaningful and impactful.

What do you believe to be the biggest factor in being a successful company?

Clear and open communication among team members, organization and passion.

Our company's staff all enjoy working with each other and our passion is what fuels our desire to create better systems of organization and communication. When there is an issue, we work hard to resolve it with one another so that it is prevented for the future.

Our passion is what drives us to also create better courses, better and more personalized job assistance and to help people feel truly prepared to be TESOL educators. Choosing a TESOL course can be a very overwhelming task. On a daily basis, I receive feedback from students, graduates and prospective students explaining that so much was clarified for them about what to expect from a TESOL course, after taking a course with us or after speaking with one of our representatives.