TESL: Teaching English as a Second Language

The required credential for teaching English in Canada

A TESL certification qualifies you to teach English in Canada and is required for positions in private language schools, college ESL programs, and government-funded English courses.

Recognized by:

TESL Canada

TESL Canada
Professional Standards 1 & 2

Institutionally Accredited by:

ACCET

U.S. Department of Education
Recognized Agency

Required for jobs at:

Canadian Language Schools

College ESL programs &
government-funded English courses

About TESL

What is TESL Certification?

Understanding what TESL is, why it matters in Canada, and how it relates to other ESL teaching credentials.

TESL is often used interchangeably with TESOL and TEFL, but in Canada, the term TESL is preferred. More importantly, TESL Canada accreditation is required for teaching positions at recognized institutions.

A TESL certification qualifies you to teach English in Canada and is required for positions in private language schools, college ESL programs, and government-funded English courses.

Want to know more about how TESL, TESOL, and TEFL relate? Read our certification guide →

OnTESOL has been training TESL-certified teachers online since 2003.

Why Choose OnTESOL? Recognized by TESL Canada, ACCET-accredited by the U.S. Department of Education, valid for teaching in Canada and worldwide, and more comprehensive than basic online courses.

The skills employers expect

What Schools Expect from Trained ESL Teachers

English teachers are expected to do more than follow a textbook. Schools require certified teachers who can plan, adapt, and engage learners with real-world materials.

Certified ESL teachers are expected to:

  • Collaborate with curriculum development
  • Create effective lesson plans beyond the textbook
  • Use authentic materials like TV shows, songs, and magazine articles
  • Apply the Communicative Language Teaching (CLT) method for interactive learning

An accredited TESL course covers everything you need to know about grammar and phonology so you can explain the rules of the English language to your students. The methodology module trains you to present language points in context, use authentic materials, and have students practice their skills in meaningful, communicative ways. You'll also build confidence in classroom management, learner needs analysis, and assessment — the practical skills that separate a trained teacher from someone who's just a fluent speaker.

Explore our TESL/TESOL/TEFL courses →

ESL teacher in a Canadian classroom
Choosing a Course

How to Choose a Quality TESL Course

Not all TESL courses are created equal. Many quick and inexpensive online programs lack accreditation — meaning they won't qualify you for the jobs you're training for. Here's what to look for.

1

Institutional accreditation

Look for accreditation by a government-recognized educational body, such as ACCET. This guarantees the school meets quality standards in how it delivers training.

2

External recognition

For Canadian teaching jobs, you'll want a course recognized by TESL Canada. For international jobs, look for CELTA equivalence — a Standard 1 course meets that bar.

3

Practical lesson-planning training

Choose a course that teaches real lesson-plan creation using the Communicative Language Teaching method — not just multiple-choice quizzes.

View our accredited courses →

An accredited course also ensures that you:

  • Meet industry standards for teaching English in Canada
  • Qualify for teaching jobs in Canada and abroad
  • Receive advanced training in lesson planning, grammar, and phonology
  • Earn a certificate valid for life — no need to take another course

Planning to teach in Canada?

You'll specifically want a course recognized by TESL Canada. Recognition comes in three tiers — Standards 1, 2, and 3 — each with its own eligibility requirements and job pathways.

Career Paths

Where TESL Training Can Take You

A TESL credential is recognized worldwide. Whether you want to stay in Canada, head abroad, or teach online, an accredited certification opens the door.

In Canada — private language schools, colleges & LINC programs

Required credential for accredited Canadian language schools and government-funded English courses for newcomers.

Teach English in Canada

Internationally — Europe, Asia & Latin America

An accredited TESL credential is recognized worldwide and qualifies you for work visas in top destinations.

Teach English Abroad

Online — remote teaching & private students

Work for top online ESL companies or build your own student base — teach from anywhere with an accredited credential.

Teach English Online
Accrediting Bodies & Associations

National & Provincial Bodies

The Canadian ESL field is supported by one national accrediting body and several provincial associations that drive professional development and conferences.

TESL Ontario

TESL Ontario is a provincial association and the second largest accrediting organization in Canada. Its main focus is to accredit and promote training with an emphasis on teaching English to immigrants and refugees. They are also very active in the development of conferences and resources.

Their accreditation is required for teaching in the LINC program in Ontario — a government-funded ESL program that offers free language instruction to new immigrants. TESL Ontario accreditation is not required for LINC programs in other provinces.

ATESL — Alberta

The Alberta Teachers of English as a Second Language is a provincial association that promotes the highest standards in the ESL teaching field. Their main roles are to provide resources for professional development, establish standards for the profession, and enable outreach to the teaching and learning communities.

The ATESL Curriculum Framework provides a guide to effective curriculum development in Alberta. They also support TESL Canada and other provincial associations by promoting and participating in conferences as well as enabling the continuous development of teaching resources.

BC TEAL — British Columbia

BC TEAL is the provincial association in British Columbia. Established in 1967, its goal is to develop the English teaching profession and to support members with annual conferences and teaching resources that challenge theories and assumptions in order to help the industry progress.

Frequently Asked Questions

Frequently Asked Questions

Common questions about TESL certification and teaching English in Canada.

What is TESL?
TESL stands for Teaching English as a Second Language. It refers to teaching English to students who are learning the language while living in an English-speaking environment — for example, immigrants in Canada, ESL students in language schools, or international students at colleges and universities. A TESL certification trains you in the methodology, lesson planning, and language analysis skills needed to teach those students effectively. In Canada, the term TESL is preferred over TESOL or TEFL.
Is TESL the same as TESOL or TEFL?
In practice, the three acronyms refer to the same type of professional training. The difference is regional and contextual: TESL (Teaching English as a Second Language) is the preferred term in Canada and is used when students are learning English in an English-speaking environment. TESOL (Teaching English to Speakers of Other Languages) is the international academic umbrella term. TEFL (Teaching English as a Foreign Language) is more common when teaching English in non-English-speaking countries. Most accredited 120-hour courses qualify you for all three contexts. Read our full TESOL/TESL/TEFL guide →
Who needs a TESL certification?
A TESL certification is for anyone who wants to teach English to non-native speakers — whether that's adults in a Canadian language school, immigrants in a LINC program, international students at a college or university, or learners online. New ESL teachers need a TESL certification to qualify for entry-level jobs. Experienced teachers returning from teaching abroad often pursue TESL training to upgrade their credentials for the Canadian market. Even fluent native speakers benefit from formal training, since teaching grammar, phonology, and lesson planning are skills that don't come automatically from speaking a language.
How is TESL different from a teaching license?
A TESL certification and a provincial teaching license are different credentials for different teaching contexts. TESL training qualifies you to teach English as a second language to adults and post-secondary students in private language schools, college ESL programs, and government-funded courses for newcomers. A provincial teaching license (such as the one issued by the Ontario College of Teachers) is required to teach in the K–12 public school sector. Some teachers hold both credentials — a teaching license to teach in public schools and a TESL certification to teach ESL classes within those schools or to teach adults in language programs.

Ready to teach in Canada?

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Join thousands of graduates who started their ESL teaching careers with OnTESOL's accredited certification programs.

TESL Canada Recognized ACCET Accredited Required for Canadian ESL Jobs