Level 5 420 Hour Online Advanced TEFL Diploma Pay in 3

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420 Advanced Diploma
Enrol today for $165*was $1,799.00 Save 82% off

*Full price $329. Pay 50% today to get started. Balance due in 30 days

Offer ends: Friday 19th July

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  • SPECIAL OFFER - FREE Live & On-Demand Classes
  • PLUS - 2 FREE Courses - Yoga & Mindfulness
  • 180 hours of online Level 5 TEFL training
  • 60-hour online Level 5 Course in Teaching One-to-One & Online
  • 60-hour online Level 5 Course in Teaching Business English
  • 60-hour online Level 5 Course in Teaching Other Subjects in English
  • 60-hour online Level 5 Course in Teaching IELTS (International English Language Testing System)
  • UK Government-regulated Level 5 Advanced Diploma certification
  • Recognised in the US (DEAC-approved)
  • Boost your earning and employment potential
  • Support and feedback from DELTA-qualified tutors
  • Flexible online studying 24/7 from any device
  • Highly respected by employers internationally

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Course Summary

The 420 Hour Advanced TEFL Diploma: Highest earning potential

Join over 210,000 i-to-i graduates on their TEFL journeys around the world with our Level 5 420 Hour Advanced TEFL Diploma.

This is our most comprehensive online course and the only Advanced TEFL Diploma available. You’ll acquire the essential skills needed to become a successful all-round TEFL teacher and a qualification that is not only recognised and highly respected the world over but one that will put you a cut above the rest.

This qualification is ranked as the same level as CELTA and will give you expert preparation for teaching English online or abroad.

We’ve specifically designed it to fit around your busy lifestyle. Without set hours of study or any in-class training dates to commit to, you’re free to access your course 24 hours a day, 7 days a week, from wherever you are.

During your training, you’ll cover a wide range of TEFL subjects, starting with the basics like structuring lessons to more intermediate topics such as teaching pronunciation and vocabulary. We’ll also provide you with advanced Level 5 training on working with youngsters, teaching Business English to adults, in-depth guidance on becoming an online TEFL teacher, teaching other subjects in English and becoming an IELTS (International English Language Testing System) coach– by the end of the course, you’ll be ready for anything your TEFL career could throw at you.

You’ll have easy access to industry-expert guidance from our team of DELTA-qualified tutors throughout your study time and because this course is regulated by the UK Government department, Ofqual, you can rest assured that your certificate will be accepted and favoured by employers all around the world.

You can download the full course schedule for the Level 5 420 Hour Advanced Diploma here.

– Our highest qualification

– The best job prospects

– Stand out from the crowd

– Make yourself more employable

 – Salary booster and earn faster

– Spread the cost…pay in instalments!

What does it mean if I spread the cost and pay in instalments? When you enrol, you’ll pay the initial 50% and this will give you full access to the course and all materials. The remaining 50% balance, will be due 30 days after you enrolled.

Why is your salary boosted? By completing the TEFL Advanced Diploma you will be equipped with the best all-round skills as a TEFL teacher and be eligible to apply for the highest paying TEFL jobs. You will stand out from the crowd and employers will want you!

How can you earn faster? You can get a TEFL certificate after you’ve completed the basic essentials in the first 180 hours of your Diploma – so you can start applying for jobs and working before you complete your Advanced Diploma and get your full certificate with your specialisms on.

What is Teaching IELTS? IELTS (International English Language Testing System) is an exam created to assess the language ability of non-natives who want to study or work where English is used as the main language. This Specialist Course covers everything you need to know about becoming an IELTS Coach.

Want to read more frequently asked questions? Please click here to read more FAQs >>

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English Government regulation & DEAC-approved

This Advanced Diploma (and all of our top TEFL Courses) is regulated by Ofqual and their sought-after stamp will appear on your certificate. View an example certificate here. This Diploma is also recognised in the US (DEAC-approved).

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For more info on this Advanced TEFL Diploma, simply pop your details in below and we’ll get in touch very soon!


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Course breakdown

  • How it works

    Starting a 420-hour course may seem a little daunting, but fear not! This course has been developed alongside experienced tutors and leading language schools to ensure that you, the student, can work through it in bitesize chunks at your own pace. So, whether you’re working full-time, studying at university or just keeping yourself busy over the summer, you can keep to your own schedule and complete it on your own terms.

    When you receive your booking confirmation email, you’ll see that the course is split up into multiple sections that can be activated one at a time. This gives you a simple structure to follow and also allows you to focus on one subject at a time, making it easier for you to digest the information and remember the important bits!

    Plus, you’ll also have consistent support and guidance from our team of DELTA-qualified tutors, who’ll be at your every beck and call from start to finish. So, whether you’re confusing your prepositions with your pronouns or you’d like some tips on the end-of-course test, you can contact them via phone, email or web chat.

    After your course, you’ll even benefit from access to our TEFL jobs board where you can view and apply for teaching positions with the assistance of our TEFL experts. So, you’ll be TEFL qualified and ready to embark upon your amazing TEFL adventure before you know it.

  • What will I learn?

    With our Level 5 420 Hour Advanced TEFL Diploma, you’ll get plenty of valuable TEFL knowledge and tons of interactive quizzes, videos and handy TEFL resources to make studying easier and fun. Here is a brief summary of just some of the topics you’ll cover:

    • Planning lessons and learning the structure
    • Making your classroom a good teaching environment
    • Teaching pronunciation, grammar and vocabulary
    • Teaching to younger students
    • The four skills: reading, writing, speaking and listening
    • Teaching online and one-to-one
    • Teaching business English
    • Teaching other subjects in English
    • Teaching IELTS

  • Module breakdown

    Want to try before you buy? We’ve put together a breakdown of the Courses you’ll cover on our Level 5 420 Hour Advanced Diploma so that you know exactly what you’re getting. (You’re welcome!). Have a read through them here:

    Part 1: Level 5 180 Hour Online TEFL Course

    The first part of the course will cover foundation TEFL learning which includes the fundamental basics like lesson planning and managing your classroom. Once you’ve mastered these, you’ll move on to some more in-depth topics, such as, teaching the four skills and delivering engaging lessons on vocabulary.

    You’ll then learn all about teaching grammar – but don’t worry! You don’t need to be a grammar expert – we’ll teach you everything you need to know and by the end of this unit, you’ll have the skills to deliver an effective lesson on English grammar.

    Next, you’ll get a good understanding of the differences between teaching older and younger students. Plus, you’ll learn about adapting your teaching styles and lesson plans to accommodate for younger students.

    At the end of this Course, you’ll have strong knowledge of the key principles of TEFL and the confidence to start teaching!

    Part 2: Level 5 Teaching One-to-One & Online Course

    Learn how to personalise your teaching approach in this Specialist TEFL Course, through creating a unique syllabus considering your student and combating potential problems. You’ll also get some insider info on the technical aspects of teaching online to help you get set up as an online TEFL teacher.

    Part 3: Level 5 Teaching Other Subjects in English

    Teaching other subjects in English, such as maths, science, and geography helps immerse the students completely into the English language, improving fluency and understanding. This Course will help you prepare how to teach other school subjects, in English, for both primary and secondary school students.

    Part 4: Level 5 Teaching IELTS

    IELTS (International English Language Testing System) is an exam created to assess the language ability of non-natives who want to study or work where English is used as the main language. This  Course covers everything you need to know about becoming an IELTS Coach.

  • 24/7 access

    Instead of sticking to specified studying hours, we’ve made our course accessible via our online portal 24 hours a day, 7 days a week. This means that you can log in from your phone, laptop, PC or tablet and continue where you last left off any time and any place. What’s more, you’ll be able to track your progress throughout so that you know exactly where you’re up to.

  • Support

    You’ll also benefit from support and expert advice from our team of DELTA-qualified tutors. Throughout the entirety of your Course, they’ll be ready and waiting for your TEFL questions – and with their wealth of industry knowledge and experience, you’ll always get the answers you need.

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The UK’s trusted TEFL Course Provider

Our courses undergo strict external monitoring and control, ensuring you can be safe in the knowledge that your training is the best it can be.

This course, as well as all of our top TEFL Courses, is regulated by the English Government department, Ofqual regulated and DEAC-approved,  which means it has received official recognition from the US government regulated awarding body.

So, you can rest assured that the content you study will be of the highest quality and your TEFL qualification will internationally-recognised and favoured by employers all over the world.


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Who are Ofqual?
Ofqual is the British exam watchdog and their job is to ensure qualifications awarded are of the highest standard. An Ofqual stamp of approval on your qualification will be recognised worldwide and is highly respected by employers, pushing your resume to the top of the pile and getting you your dream TEFL job!

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Did you know?
We’ve also received independent accreditation from the ODLQC (Open & Distance Learning Quality Council) which is recognised by employers across the globe giving you a qualification which will give you the best start on your TEFL journey.

DEAC news section


DEAC-approved means the criteria for Approved Quality Curriculum (AQC) status has been attained. DEAC holds recognition by the United States Department of Education and the Council for Higher Education Accreditation.


I have registered to do the TEFL 420 Higher Diploma Course in July 2021. I have just completed the first part of the course which was 180 hours and have received my TEFL certificate so I can start teaching, whilst I carry on studying. I found the fact that I could work at my own pace, meant I could finish sooner. The feedback on assignments is less than 24 hours and well written with constructive information. You also have the name of the person who marks your assignments so you can make contact if you need to. I am impressed that you cannot pass onto the next module unless you have completed a test and where required the assignment. I know of other companies offering the same training that allow you to move on without doing tests, assignments and no guidance given in terms of the format of lessons. i-to-i give you extremely clear guidelines and additional information to read up on. It has been a fantastic experience and I look forward to completing my Diploma in record time.” Jacqui Van Staaden

Professional tutor support

Although you might feel like a strong, independent TEFLer, you might need a nudge in the right direction every now and again – that’s where our experienced, highly-qualified tutors come in. With an abundance of insider info and industry knowledge you’ll get all the answers you need whenever you need them. All you need to do is ask!

Academic director
Emily John

Academic Director

Gayle Norman TEFL tutor
Gayle Norman

TEFL Tutor

TEFL Tutor, Hayley
Hailey Fliegelman

TEFL Tutor

TEFL tutor, Paul
Paul Myers

TEFL Tutor

Penny Campbell

TEFL Tutor

TEFL tutor, Annie
Annie da Silva

TEFL Tutor

TEFL tutor, Stephen
Stephen Maule

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TEFL tutor, Tracy
Tracy Robinson

TEFL Tutor

TEFL tutor, Anna
Anna Britton

TEFL Tutor

TEFL tutor, Teresa
Teresa Jacobs

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TEFL tutor, Peter
Peter Bowdery

TEFL Tutor

TEFL tutor, Meryl
Meryl Burgess

TEFL Tutor

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Lindsey Cottle

TEFL Tutor

FAQs: Answered

  • Q: How much English grammar should I already know before taking the course?

    You don’t need to be an expert in grammar, the course will teach you everything you need to know in that area. Plus, you already speak English – so you already know it! You just don’t know you know it.

  • Q: Can I take the course if I’m not a native English speaker?

    Yes – you don’t have to be a native English speaker to teach English abroad but you'll need to have at least a near-native level of English to take one of our Level 5 Courses. If your English is good but not at a near-native level, why not take a look at our 180 Hour TEFL course instead.

  • Q: What qualifications do I need to teach English abroad?

    You don’t need any qualifications, other than TEFL, to teach online or abroad. A few countries may ask for a bachelor’s degree for visa purposes but there are many, many places you can teach without a degree!

  • Q: Who are Ofqual and what do they do?

    Ofqual – or the Office of Qualifications and Examinations Regulation – are a department of the UK Government who assess qualifications to make sure they hit the criteria that shows they qualify as legitimate certifications. They regulate all of our top TEFL Courses and you can see i-to-i on their register here.

  • Q: How long do I get to complete the course?

    To complete the 420 hours of training, you'll get 37 weeks. The typical time to complete the course is anywhere between 12-20 weeks, so you'll have plenty of time to get through the materials at your own pace.

  • Q: Does this Course include any in-class training?

    The 420 Hour Advanced Diploma in TEFL doesn’t include any classroom learning but we do offer a Level 5 320 Hour Diploma in TEFL which includes our 20 Hour Classroom TEFL Course. We’d always recommend taking some in-class training if you can attend one of the dates and locations on offer as this will make you a stronger candidate when you’re applying for TEFL jobs.

  • Q: Do I need any equipment for the course?

    As this is an online course, you do need to have an Internet connection and a suitable device to study on (laptop, desktop, tablet or phone). You will also need to have a media player on the device, as the course includes a number of short observational films and tutorials.

  • Q: Do I need to have Word to take the course?

    You do not need Word for any of the course material. We do recommend that you use Word to complete the assessed assignments. However, it is possible to download the assignment template into Google docs, edit it there and then upload your work if required.

  • Q: Do I need to purchase any textbooks for the course?

    No, all of the content is provided within the online learning platform.

  • Q: What level of English language skills do I need for the Advanced TEFL Diploma?

    The Level 5 Advanced TEFL Diploma course is designed for strong (native-level) English language speakers, able to work competently with course material and assessments that are pitched at a high school graduate level. If you are fluent in English but not at native-speaker level, you may find our 180 Hour TEFL course is more appropriate.

  • Q: How long will it take me to complete the course?

    On average, it takes students around 12-20 to complete the course. However, you complete the course at your own pace and can go through the material faster or spread it out over a longer period, if required. You will have access to the material for 37 weeks, which you can extend if needed.

  • Q: What happens if I don’t complete the course within 37 weeks?

    If you don’t complete the course within 37 weeks, you can apply for an extension. This can be for as little as five days or as much as 90 additional days.

  • Q: How many hours will I need to study each week?

    The course is designed to let you work through the material at your own pace and to fit your study around other commitments in your life.

    As a rough guide, if you are studying full time, we suggest setting aside 25 to 30 hours per week, to ensure you have time to absorb and reflect on your learning. At this rate, you should complete the course within around three months. If you are studying part time, we suggest allocating at least five to ten hours per week to keep your learning going. At this pace, you should complete the course within around seven to eight months.

    Do bear in mind that everyone learns at a different pace. You may progress through the material more quickly or need more time to go through the course content thoroughly.

  • Q: Will I need to take notes as I work through the course?

    You can print out the course material, so you do not need to note down all the points that you cover. However, you may find it useful to make your own notes as a personal reminder of key points you learn from the course.

  • Q: Do I need to sit any exams?

    You will not need to sit any formal exams. However, you will need to submit and pass five written assignments in order to achieve your TEFL Diploma. You also will need to pass an online End of Unit Test at the end of each unit in order to confirm that you have understood the material in that unit before moving on to the next part of the course. You can find out more about the course assessment in our Assessment FAQs.

  • Q: Can I use a nickname to register for the course?

    You should use your proper name when you register for the course. The name that you use to register for the course is the name that will appear on your final qualification certificate. In line with our Awarding Organisation procedures, you will need to provide a copy of your passport (or other formal ID) to confirm your identity before your certificate is issued.

  • Q: Can I contact you if I need help with the course?

    Our expert TEFL Support Team is available via email, telephone and webchat to answer your questions and support you through the course. The support team includes both operational staff, who can help you with practicalities of accessing and working through the course, and academic staff who can assist with TEFL specific questions.

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Support with a smile

From our friendly TEFL Experts to our DELTA-qualified tutors; our whole squad is passionate about providing excellent customer service – and we’ll be there for you on every step of your TEFL journey.

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Worldwide recognition

Here at i-to-i, we’ve built a very strong name for ourselves in the industry. So, not only will your qualification be respected and recognised, it’ll be favoured by employers around the globe.

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Experience and expertise

Established in 1994, we’re the longest-standing TEFL Course provider in the world. Our graduates number over 210,000 and we even pioneered the first ever online and weekend TEFL Courses.

Find Us

i-to-i TEFL
4th Floor, Wilson House, Lorne Park Road,
Bournemouth, England, BH1 1JN,
United Kingdom

i-to-i TEFL is a part of Teach and Travel Group Ltd.
Registered Company No. 7935847.