Quick answer: To choose a good online TEFL course, check five things in order: is it independently accredited (for example by ACTDEC); is it at least 120 hours; does it include personal tutor support and real teaching methodology (not just grammar); does it come with lifetime access and genuine job help; and can you find independent graduate reviews? If a course hides who accredits it, or a “120-hour” certificate costs almost nothing on a flash-sale site, treat that as a red flag. Below is the full checklist.
Choosing an online TEFL course is one of the most important steps you’ll take toward teaching English abroad or online. But with hundreds of providers offering every imaginable option, how do you pick the right course for your goals, budget, and future career?
In this guide, we’ll show you exactly what to look for when choosing a TEFL course - and why not all certificates are created equal.
How to choose the best online TEFL course (step by step)
Work through these seven checks before you pay for any course:
- Check the accreditation. Confirm the course is accredited by an independent, reputable body such as ACTDEC, and that you can easily find out who the accreditor is. If it's hard to find, that's a red flag.
- Confirm it is at least 120 hours. A 120-hour course is the industry standard that most reputable employers, online and abroad, require. Anything less can limit your job prospects.
- Look for personal tutor support. An experienced ESL tutor to mark your assignments and answer teaching questions makes a huge difference to how much you actually learn.
- Check for flexibility and lifetime access. A good online course is self-paced and lets you keep the materials and job boards for life, so you can refer back after you start teaching.
- Find out about job assistance. The course should help you get hired – a jobs board, CV help and interview guidance, not just a certificate.
- Choose a course with specialisation options. Add-ons like teaching business English, young learners or teaching English online help you stand out and widen your options.
- Compare real graduate reviews. Read independent testimonials and case studies on third-party review sites before you enrol.
Why is accreditation the first thing to check?
Many TEFL courses claim to be “internationally recognized,” but only courses accredited by an independent, reputable body (like ACTDEC) guarantee quality, curriculum standards, and employer acceptance.
At Global English TESOL, all our online courses are ACTDEC-accredited - ensuring worldwide credibility. If a provider makes it hard to find out who accredits its courses, walk away. For the full picture, read our guide to online TEFL/TESOL accreditation, and if you want to check a UK regulated qualification you can search the Ofqual register.
🔎 Tip: Look for transparent information about who accredits the course. If it's hard to find, it’s a red flag!
How many hours should a TEFL course be?
A 120-hour TEFL course is the industry standard. Most reputable employers (both online and abroad) require a minimum of 120 hours of TEFL training. Anything less may limit your job prospects or require you to take additional training later.
✅ Our TESOL Premier 120-Hour Course meets - and exceeds - this requirement, and our 150-hour Advanced and 250-hour Professional courses go further for more competitive markets.
How much should an online TEFL course cost?
Price should track hours and quality, not flashy marketing. As a rough guide to the market:
| Course type | Typical hours | Indicative price range | Best for |
|---|---|---|---|
| Short / weekend course | 20–70 | From around £150 | Volunteering, a taster, a CV add-on |
| Standard certificate | 120 | Low hundreds of £ | Most jobs in Asia, Europe and online |
| Advanced | 150 | Mid hundreds of £ | More competitive markets, standing out |
| Professional (Level 5) | 250+ | Upper hundreds of £ | Career teachers, higher pay brackets |
If a “120-hour accredited” course is being sold for the price of a takeaway on a daily-deals site, ask why.
What red flags should you avoid?
- No named accreditor, or a badge you can't verify with the awarding body.
- Fewer than 120 hours sold as if it were a full qualification.
- No tutor – just auto-marked multiple-choice quizzes.
- “Guaranteed high-paying job” promises no reputable provider can make.
- Only reviews hosted on the provider's own site, with nothing independent.
Does the course include tutor support and job help?
Learning to teach English involves mastering new skills like lesson planning, classroom management, and grammar instruction. That’s why having personal tutor support makes a huge difference. At Global English TESOL, every student is assigned an experienced ESL tutor to give feedback on assignments, answer teaching-related questions, and offer guidance when you're ready to start job hunting.
A TEFL course shouldn’t just train you - it should also help you get hired. We provide lifetime access to an exclusive TEFL jobs board, CV templates and reviews, interview tips tailored to different regions, and connections to reputable language schools and online platforms.
Final checklist: how to choose the best TEFL course
✅ Accredited by a recognized body
✅ At least 120 hours
✅ Full tutor support
✅ Flexible and self-paced
✅ Lifetime access to materials and job boards
✅ Job placement assistance
✅ Options to specialize
Why choose Global English TESOL?
Since 1997, we’ve helped thousands of new teachers launch successful TEFL careers with accredited, affordable, and supportive online courses.
🎓 Explore our full course range here and start your teaching journey with confidence.
Choosing an online TEFL course: FAQs
Are cheap Groupon TEFL courses worth it?
Usually not on their own. Heavily discounted courses are often short, auto-marked and lack recognised accreditation, so employers may not accept them. A cheap course can work as a taster, but for a job you'll want an accredited course of at least 120 hours with tutor support – check what you're actually getting before you buy.
What does “accredited TEFL course” actually mean?
It means an independent body has inspected the course against published standards for curriculum, assessment and tutor quality – not that the provider has simply awarded itself a logo. In the UK, ACTDEC specialises in accrediting distance TEFL/TESOL courses. Always confirm you can verify the accreditation claim with the awarding body itself.
Is a Level 5 TEFL course better than a 120-hour course?
A Level 5 course is a higher, more advanced qualification and can help you stand out or reach better-paid roles, but a 120-hour accredited certificate is enough to get hired for most first jobs. Choose based on your goals and budget: 120 hours to get started, Level 5 to go further.
How long does an online TEFL course take to finish?
Because online courses are self-paced, it's up to you. Studying around 5–7 hours a week, most people finish a 120-hour course in roughly 6–10 weeks. A good provider gives you lifetime access, so there is no pressure to rush.