Our Accreditations
OnTESOL is accredited and recognized by the leading Post-Secondary Education and TESOL/TEFL/TESL training organizations from Canada and the United States.
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OnTESOL's online TEFL/TESOL courses are academically equivalent to CELTA, recognized by TESL Canada, and accredited by ACCET — starting at US$460 versus around US$2,500 for a typical CELTA course.
About the CELTA
The CELTA set the international standard for English teacher certification — and several accredited online programs now meet that standard at a much lower cost.
The CELTA (Certificate in English Language Teaching to Adults) is a TEFL/TESOL qualification developed by the University of Cambridge. First introduced in the 1960s, the CELTA was one of the first courses for training and certifying English language teachers. It set the international standard for English teacher certification at 120 hours of training with a supervised teaching practice module of 6 hours.
The CELTA course is delivered in classrooms worldwide and through approved online providers. On average, the CELTA certification course costs around US$2,500.
Several alternatives to CELTA offer academically equivalent training at a much lower cost. The leading example is TESL Canada, the national body that accredits ESL teacher training courses delivered by Canadian universities and private institutes such as OnTESOL. A 120-hour TESOL/TEFL course recognized by TESL Canada for Professional Standard 1 is academically equivalent to CELTA, since it requires the same 120 hours of training plus a 20-hour Practicum.
The online TEFL/TESOL courses offered by OnTESOL and recognized by TESL Canada start at US$460.
Academically Equivalent
Seven reasons the online TEFL/TESOL certification courses offered by OnTESOL are equivalent to CELTA:
The same foundational training in English grammar systems and phonology that forms the academic core of a CELTA syllabus.
A full module on the Communicative Language Teaching method, the same methodology taught on a CELTA course and the framework used in language classrooms worldwide.
Practical assignments covering the most effective ESL lesson-planning frameworks — PPP, ESA, TTT, and TBL — the frameworks used in real ESL classrooms worldwide.
Scheduled live workshops where trainees practise lesson planning with peers and a qualified tutor — equivalent to the live tutorial component of a CELTA course.
Extensive written feedback from a qualified tutor on every lesson plan assignment — the same model of formative assessment used on a CELTA.
Add a 20-hour or 50-hour Practicum module for hands-on supervised teaching practice with real ESL students. Required for TESL Canada certification and equivalent to (or beyond) the practicum component of a CELTA course.
Graduates with a 120-hour certificate and a degree qualify for free, lifetime job assistance through the OnTESOL job board and partner network — a service not included with a typical CELTA course.
How OnTESOL Compares
OnTESOL's online TEFL/TESOL certification courses cover the same academic ground as a CELTA. They go beyond CELTA in five practical areas: lesson planning, teaching practice hours, flexibility, accreditation, and cost.
OnTESOL trainees complete graded lesson-planning lab assignments throughout the course, mastering the ESL lesson-planning frameworks (PPP, ESA, TTT, TBL) used in real ESL classrooms worldwide. Each plan receives written tutor feedback. On a CELTA course, trainees complete reflection essays and lesson planning forms part of the 6-hour teaching practice module — CELTA does not include graded lesson-planning lab assignments. OnTESOL trainees who complete the separate Practicum module then practise their lesson-planning skills with real students.
OnTESOL offers more teaching practice hours than CELTA. The 20-hour Practicum module includes 10 hours of supervised teaching practice; the 50-hour Practicum module includes 20 hours. CELTA includes only 6 hours of supervised teaching practice as part of its required syllabus.
OnTESOL's asynchronous 120-hour Advanced TESOL/TEFL Certificate offers more flexibility than a CELTA course with a fixed schedule. OnTESOL is designed for university students, working professionals, and anyone who wants to study TEFL/TESOL online at their own pace. The course also includes live lesson-planning workshops via Zoom for trainees who want interactive sessions with peers and a tutor.
OnTESOL is institutionally accredited by ACCET, a U.S. Department of Education-recognized agency. ACCET accreditation means OnTESOL graduates from the USA earn CEUs that count toward state teacher-licensing renewal — making OnTESOL a strong alternative to CELTA for American teachers and licensed U.S. teachers who need CEUs. OnTESOL's online TEFL/TESOL courses are also recognized by TESL Canada, which makes OnTESOL a strong alternative to CELTA for Canadians who want certification valid both at home and abroad. CELTA courses delivered outside Canada generally need to go through TESL Canada's PLAR equivalency process to be recognized for Canadian teaching positions.
Starting at US$460, the 120-hour Advanced TESOL/TEFL Certificate is much more affordable than a US$2,500 CELTA course — a saving of more than US$2,000. The 250-hour TESOL Diploma is recognized by TESL Canada for Professional Standard 2 and is designed for experienced ESL teachers and CELTA graduates looking to add curriculum development, assessment, and syllabus design to their qualifications. Many TESOL Diploma graduates have moved on to school director and IELTS examiner roles.
A side-by-side summary of how the two certifications compare across curriculum, teaching practice, format, and cost.
| Feature | OnTESOL 120-hr Certificate | CELTA |
|---|---|---|
| Curriculum | ||
| Training hours | 120 hours | 120 hours |
| Methodology (CLT) | ||
| Graded lesson-planning lab assignments | 3 with tutor feedback | Reflection essays only |
| Teaching Practice | ||
| Required teaching practice | Optional | 6 hours |
| Maximum teaching practice available | 20 hours (50-hr Practicum) | 6 hours |
| Live workshops via Zoom | Cohort sessions (fixed schedule) | |
| Format & Cost | ||
| Self-paced study | Fixed schedule | |
| Accreditation | ACCET (U.S. Dept. of Ed.) · TESL Canada | Cambridge Assessment English |
| Tuition (USD) | From US$460 | ~US$2,500 |
| Free job assistance | ||
Next Steps
Both programs are recognized by TESL Canada and accredited by ACCET. Pick the 120-hour course as a CELTA alternative for entering the field, or the 250-hour Diploma to go beyond what a CELTA covers.
Academically equivalent to CELTA. Covers grammar, phonology, CLT methodology, and the four core lesson-planning frameworks. From US$460 — over US$2,000 less than a CELTA. TESL Canada Professional Standard 1 · 12 ACCET CEUs.
View course details →For experienced teachers and CELTA graduates. Adds curriculum development, assessment, and syllabus design. TESL Canada Professional Standard 2 · 25 ACCET CEUs.
View course details →Ready to get certified?
Accredited online TESOL courses recognized by TESL Canada and ACCET. Self-paced study, live Zoom workshops, and personal tutor feedback — from US$460.
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