“English teacher certificate” sounds like one product. It is not. A short online TEFL class, a university TESOL certificate, Cambridge CELTA, and a government teaching licence can all appear in the same search result, but they prepare you for different jobs.
The safest decision starts with the employer or program that will review your documents. If your target is EPIK, follow EPIK's published eligibility and document rules. If your target is a hagwon, ask the employer what it requires and what it merely prefers. If your target is an international school, expect a recognised teaching licence and classroom experience; TEFL alone is usually not the relevant credential.
100+
EPIK's published TEFL/TESOL/CELTA hour threshold
4
Credential types compared in this guide
1
Reviewer that matters: your actual program or employer
Start with the job, not the acronym
Before comparing courses, choose the job family you are preparing for. This prevents the most expensive mistake: buying a certificate that is impressive in advertising but irrelevant to the reviewer.
TEFL vs TESOL vs CELTA vs teaching licence
TEFL and TESOL are broad labels used by many course providers. CELTA is a named Cambridge qualification. A teaching licence is issued or recognised by a government or professional regulator and belongs to a different credential pathway.
What EPIK's 100-hour rule means
EPIK's official eligibility information lists a TEFL, TESOL, or CELTA certificate of at least 100 hours for applicants who do not meet the teacher-training requirement through an education-related degree or a recognised teaching licence. A 120-hour course is common because many providers package training at that length, but “120 hours” is not proof of quality by itself.
Published EPIK guidance has also contained placement-specific rules, including an in-class component for Busan. Those details can change by intake and place. If a particular region matters to you, get current confirmation before choosing a fully online course.
Important distinction
EPIK eligibility, an Office of Education's placement rule, a private employer's hiring preference, and Korean visa eligibility are different decisions. A page that merges them into one universal “Korea requires TEFL” rule is oversimplifying.
How to verify a TEFL class before you pay
“Accredited” and “internationally recognised” are marketing phrases until you can identify who stands behind them. Use this five-step check.
- Ask the reviewer first. Send the exact course link to the program, school, or recruiter that will evaluate your documents.
- Read the syllabus. Look for lesson planning, language systems, teaching skills, assessment, and classroom management—not only video watch time.
- Confirm the hour evidence. Ask what the final certificate and transcript or course letter will show.
- Check the awarding and oversight claims. If a provider names a regulator or awarding body, verify the provider and qualification on that organisation's official register, such as the Ofqual register where relevant.
- Save the evidence. Keep the syllabus, receipt, written acceptance confirmation, and a sample of the completion document.
A logo strip is not a registry check. Neither is a review page written by the course seller. If the provider will not name the awarding or oversight body, explain its assessment, or show what the certificate records, keep looking.
Online TEFL class or teaching practice?
Online study is useful when you need flexible scheduling. Teaching practice is useful because it makes you plan, teach, receive feedback, and try again with real learners. Those are separate benefits. Choose the format based on both acceptance and readiness.
- Choose a verified online course when it meets your program's current rules and flexibility is the priority.
- Choose supervised practice when you are new to teaching, want feedback before your first class, or need an in-class component for a target placement.
- Consider CELTA when you want a specific Cambridge qualification with assessed teaching practice and the greater time and cost fit your career plan.
Cambridge describes CELTA as a qualification for teaching English as a foreign language and states that it includes face-to-face or online teaching practice with groups of learners. Read the current details on the official Cambridge CELTA page.
Which course should you choose?
I only need to meet a published EPIK threshold
Start with a verified 100-hour-plus option that EPIK or your recruiter confirms for the current intake. Compare assessment and support, not hours alone.
I have never taught before
Prioritise tutor feedback, observed or supervised teaching practice, and lesson-planning assignments. A cheaper video-only course may leave the hardest part untouched.
I want a long-term language-teaching career
Compare CELTA and robust TESOL programs with assessed practice. Look beyond the immediate Korea application to recognition in your next market.
I want to teach at an international school
Research the teaching-licence route for your country and subject. TEFL can add language-teaching skill, but it does not replace professional teacher licensure.
Course guide vs course offer
This page is the independent decision guide. It explains credential types, EPIK's published threshold, and how to verify a provider. Korvia also offers a partner TEFL course. Prices, included materials, and enrolment terms belong on the separate Korvia TEFL course page, so you can distinguish general guidance from a commercial offer.
If you are still choosing between public schools and private academies, read the complete guide to teaching English in Korea first. The right certificate depends on the job you are actually pursuing.
Official and primary sources
Program requirements and placement policies can change. This page was reviewed on August 24, 2026; confirm the rule for your intake and target employer before purchasing a course.
