How to Get TEFL Certified: A Complete Beginner's Guide
Starting From Scratch: What You Actually Need to Know
You've decided to pursue ESL teaching. Maybe it's a gap year, a career change, or the beginning of a long-term plan to work abroad. Somewhere in your research, the acronym "TEFL" appeared — and possibly CELTA, TESOL, and DELTA too, all seemingly interchangeable and all apparently essential.
This guide cuts through the noise. We'll explain exactly what TEFL is, why it matters, what hour count you need, how to choose between online and in-class formats, what to look for in a provider, and what you can realistically expect to pay. By the end, you'll have a clear next step.
What Is TEFL?
TEFL stands for Teaching English as a Foreign Language. It's the general term for certification in teaching English to non-native speakers, typically in countries where English is not the primary language. An ESL teacher in Vietnam, South Korea, or Saudi Arabia is, by definition, teaching EFL.
A TEFL certificate is not a degree — it's a professional qualification that signals you understand how to plan lessons, manage a classroom, explain grammar, and deliver engaging instruction to learners at different levels. Most employers in the ESL market require it (or its equivalent) as a baseline credential.
What TEFL is not: a substitute for a bachelor's degree where visa regulations require one, or a guarantee of employment. It's a necessary foundation, not a complete solution on its own.
TEFL vs CELTA vs TESOL: The Short Version
These three terms cause more confusion than almost anything else in the ESL world.
TEFL is a broad category. Dozens of providers worldwide offer "TEFL certificates" — quality varies enormously. An accredited 120-hour online TEFL from a reputable provider is a solid, widely accepted qualification. A 40-hour online course from an obscure provider is worth very little.
CELTA (Certificate in English Language Teaching to Adults) is a specific qualification administered by Cambridge Assessment English. It is not one of many TEFL options — it is its own distinct certification with a standardised global curriculum, assessed by Cambridge-appointed assessors, involving an intensive four weeks of teaching practice and observed lessons. CELTA is regarded by most employers as the gold standard entry-level qualification.
TESOL stands for Teaching English to Speakers of Other Languages. It covers a slightly broader context than TEFL (including teaching in English-speaking countries to immigrant or refugee communities), but in practice the terms are used interchangeably by most employers. Many courses are now marketed as "TEFL/TESOL" certificates.
For a full detailed comparison, see our dedicated article: TEFL vs CELTA vs TESOL.
How Many Hours Do You Need?
120 hours is the industry standard minimum.
This is not a soft guideline — it's a hard threshold used by most reputable employers, job placement services, and recruiter platforms. Below 120 hours, you will be filtered out by many employers before they even read your profile.
Here's how the market breaks down:
| Hour Count | Market Reception |
|---|---|
| Under 60 hours | Not widely accepted; mostly marketing products |
| 60–100 hours | Accepted by some online platforms; limited school uptake |
| 120 hours | Industry standard; accepted by most language schools globally |
| 150+ hours | Preferred by competitive markets (Korea, UAE, large language chains) |
| CELTA (equivalent ~150 hrs) | Gold standard; accepted everywhere; strongly preferred by international schools |
If you're investing time and money in TEFL certification, go straight to 120 hours. The cheaper, shorter options save you very little money and cost you significantly in job market credibility.
Online vs In-Class TEFL: Which Is Right for You?
Both formats have real merit. The right choice depends on your budget, timeline, career goals, and learning style.
Online TEFL
Online TEFL courses allow you to study at your own pace, from anywhere, around your current commitments. Quality has improved significantly — reputable online programmes now include video teaching analysis, interactive grammar modules, and practical teaching tasks that mirror classroom experience.
Suits: Career changers who can't take four weeks off work; teachers who want flexibility; anyone in a market where online TEFL is standard (most of Asia and Latin America).
Typical cost: $150–$500 USD. Reputable providers run frequent discounts; the full price is rarely what you pay.
Typical duration: 4–12 weeks at a reduced-hours pace, depending on your schedule.
In-Class TEFL / CELTA
In-class courses, particularly CELTA, involve full days in a training centre with real students, observed teaching practice, and immediate feedback. The learning intensity is high, and the qualification is the most widely recognised in the industry.
Suits: Teachers who want the most credible credential; those targeting international schools, university positions, or the most competitive markets; people who learn best in structured, immersive environments.
Typical cost: CELTA costs approximately £1,300–£1,800 in the UK ($1,600–$2,300 USD), with similar pricing at Cambridge-approved centres globally.
Typical duration: 4 weeks full-time (intensive).
Hybrid Formats
Some providers offer hybrid models: online theory combined with in-person teaching practice blocks. These can offer a middle ground for those who want the credibility of observed teaching without the full intensity (and cost) of a residential CELTA programme.
Online vs In-Class: Quick Comparison
| Factor | Online TEFL | In-Class CELTA |
|---|---|---|
| Cost | $150–$500 | $1,600–$2,300 |
| Duration | 4–12 weeks (flexible) | 4 weeks (intensive) |
| Employer recognition | Widely accepted | Gold standard |
| Practical component | Video tasks / self-assessed | Observed live teaching |
| Flexibility | High | Low (full-time commitment) |
| Best for | Most language school roles | International schools, competitive markets |
Choosing a TEFL Provider: What to Look For
The TEFL market has a credibility problem. Hundreds of providers exist, and the quality gap between the best and worst is enormous. Before you pay for any course, check four things:
1. Accreditation
Look for recognition from an independent quality assurance body. Names to look for include:
- ACCREDITAT (TEFL-specific accreditation body)
- Ofqual (UK government regulated qualifications regulator)
- STA (Sports and Leisure Alliance — accredits a range of training providers)
- DEAC (Distance Education Accrediting Commission — US-based)
Always verify the accreditation claim independently. Check the accrediting body's website for the provider's current listing. Accreditation can lapse, and some providers make misleading claims.
2. Practical Teaching Component
Any course worth taking includes some form of observed or assessed teaching practice. Online courses handle this through video submission and feedback, observed sessions with real learners, or a local teaching practice arrangement. If a course offers nothing beyond multiple-choice tests, it is not market-quality.
3. Actual Hour Count
Verify that the advertised hour count reflects genuine study and teaching practice hours — not course access time, video watching, or marketing content. Some providers inflate their hours. 120 hours of substantive material is meaningfully different from 120 hours of access.
4. Job Placement Support
The best providers offer post-certification support: CV review, job board access, recruiter networks, school partnership directories. This doesn't replace your own job search, but it adds value — particularly for first-time teachers who don't yet know where to start looking.
Providers widely mentioned by teachers (always verify current accreditation and reviews independently): i-to-i TEFL, ITTT, Teach Away TEFL, Premier TEFL, Bridge TEFL. These are starting points for your own research — the market evolves, and provider quality can change.
How Much Does TEFL Cost?
| Course Type | Typical Cost (USD) | Notes |
|---|---|---|
| Online TEFL (120 hrs) | $150–$500 | Frequent discounts available; compare on content, not price alone |
| In-class TEFL (local) | $500–$1,200 | Varies by country and provider |
| CELTA | $1,600–$2,300 | Fixed curriculum; Cambridge-approved centres worldwide |
| DELTA (advanced) | $2,500–$4,000 | Post-CELTA; for experienced teachers seeking career progression |
Do You Need TEFL If You Have a Teaching Degree?
A qualified teacher with classroom experience (QTS, state licence, PGCE, B.Ed.) is in a strong position. Many employers will accept a teaching degree as equivalent to TEFL, particularly for school-based roles. That said:
- A TEFL with a focus on EFL methodology shows specialised knowledge
- Some employers list TEFL specifically as a requirement alongside the degree
- For teachers moving from general education into ESL, a TEFL adds credibility at relatively low cost
If you hold a teaching qualification, getting TEFL certified is still worth considering — but it may not be the priority that it is for someone with no teaching background at all.
Your Next Step
TEFL certification is the starting point, not the destination. Once you're certified, your profile — your teaching experience, specialisms, nationality, and availability — is what schools actually evaluate when they decide who to contact.
Create a free JobRovers profile and let schools find you. A well-built profile with your TEFL certification clearly presented puts you in front of the schools that are actively hiring, in the countries you actually want to work in.
Ready to find your placement?
Create a free JobRovers profile and let schools find you. Your profile is your CV.
Create your free profileFrequently asked
Is an online TEFL certificate accepted by schools?
Yes, for the vast majority of ESL teaching positions worldwide. Online TEFL is now widely accepted by language schools, training centres, and recruiters, provided the course meets the standard requirements: a minimum of 120 hours, a practical teaching component, and accreditation from a recognised body. Some highly competitive markets and international schools may prefer an in-class qualification like CELTA, but for most language school roles in Asia, the Middle East, and Latin America, an accredited online TEFL is fully sufficient.
What is the difference between TEFL and CELTA?
TEFL (Teaching English as a Foreign Language) is an umbrella term for a range of teaching certificates offered by various providers. CELTA (Certificate in English Language Teaching to Adults) is a specific, globally standardised qualification administered by Cambridge Assessment English. CELTA is widely regarded as the most prestigious entry-level ESL certificate — it involves an intensive 4-week in-person course with observed teaching practice and is recognised by employers worldwide. TEFL courses vary widely in quality; a well-accredited TEFL from a reputable provider is a solid qualification, but CELTA carries more consistent brand recognition. Read more in our detailed comparison: [TEFL vs CELTA vs TESOL](/blog/tefl-vs-celta-vs-tesol).
How long does TEFL take to complete?
It depends on the format. An online TEFL course can typically be completed in 4–12 weeks if studied alongside work or study. Some providers allow you to go faster; most recommend a minimum pace to absorb the material properly. An in-class CELTA is an intensive 4-week full-time course — it is demanding and requires full commitment for the month. Hybrid formats (online theory plus in-person teaching practice) typically run 4–8 weeks.
How many hours of TEFL do I need?
The industry standard minimum is 120 hours. Below this, most reputable employers — and most reputable job boards — will not consider your certificate sufficient. For competitive markets like South Korea, the UAE, and large language school chains in China and Vietnam, 120 hours is the baseline expectation. Some employers, particularly international schools or university positions, look for 150 hours or more, plus a practical teaching component. If you're investing in a TEFL, go straight to 120 hours minimum — the cheaper 40- or 60-hour courses are not widely recognised.
Do I need TEFL if I already have a teaching degree?
Not always, but it often helps. If you hold a qualified teacher status (QTS, state licence, PGCE, or equivalent) and have classroom experience, many employers will regard this as equivalent to or stronger than TEFL alone. That said, a TEFL — particularly one with a focus on teaching English to foreign learners rather than general education — demonstrates specialised knowledge that a general teaching degree may not. In some markets, a TEFL is specifically listed as a requirement alongside the degree. If you're transitioning from general classroom teaching to ESL, a TEFL adds credibility at minimal cost.
What should I look for when choosing a TEFL provider?
Four things matter most: (1) Accreditation — look for recognition from bodies like ACCREDITAT, Ofqual, STA (Sports and Leisure Alliance), or DEAC. These indicate the course meets recognised quality standards. (2) A practical teaching component — even online, reputable courses include video analysis, observed teaching tasks, or in-person practice. (3) Hour count — verify the advertised hours are genuine contact and study hours, not inflated by marketing content. (4) Job placement support — the best providers offer CV review, job board access, and recruiter connections. Always verify current accreditation status independently, as it can change.
