CELTA Certificate — Cambridge English Language Teaching to Adults
The gold-standard teaching certification, fully accepted for teaching in Korea.
Cambridge
Awarding Body
120 hrs
Standard Length
In-Person / Blended / Online
Formats
Tier 1
Industry Gold Standard
What Is CELTA?
CELTA stands for Certificate in English Language Teaching to Adults. It is administered globally by the University of Cambridge (Cambridge English) and delivered through a worldwide network of approved centres. It is widely considered the most rigorous entry-level teaching qualification available — the "tier 1" benchmark against which most TEFL and TESOL courses are measured.
A CELTA course is intensive by design: around 120 total hours split between input sessions, observed teaching practice with real adult learners, written assignments, and independent lesson preparation. Assessment is continuous — there is no final exam, but every assignment and teaching observation is moderated by an external Cambridge assessor before the certificate is issued.
In the Korean ESL market, CELTA is always accepted wherever a TEFL or TESOL certificate is required. It is often viewed as the most credible of the three by employers, visa officers, and public school programs.
CELTA vs TEFL vs TESOL
All three qualify you to teach English in Korea. Here is how they actually differ in rigor, recognition, and employer perception.
| Feature | CELTA | TEFL | TESOL |
|---|---|---|---|
| Awarding Body | University of Cambridge | Varies by provider | Often universities or TESOL bodies |
| Typical Length | 120 hours (fixed) | 60–180 hours (varies) | 100–150 hours (varies) |
| Teaching Practice | Required — observed practice with real adult learners | Often optional add-on or simulated | Varies; sometimes practicum required |
| External Assessment | Yes — Cambridge assessor moderates | Rare; quality varies | Sometimes |
| Flavour | Practical, classroom-focused | Generic term; broad range | Academic, often university-affiliated |
| Korea Acceptance | Accepted everywhere TEFL is required | Accepted if 100+ hrs and accredited | Accepted if 100+ hrs and accredited |
All three are valid for the E-2 visa and EPIK eligibility. The practical difference is in perceived rigor — CELTA's external Cambridge moderation is what anchors it at the top of the tier list.
Four Ways to Complete CELTA
Cambridge-approved centres offer several delivery modes. The certificate is identical regardless of format.
Full-Time Intensive
4 weeks
Monday–Friday, full-day schedule. The fastest route. Demands heavy commitment — plan to study and prepare lessons evenings and weekends.
Part-Time
8–12 weeks
Typically 2–3 evenings per week plus weekend practice. Ideal if you're working or studying alongside the course.
Online (100%)
Varies
Fully online delivery including live lessons and teaching practice with real learners over video. Identical certificate.
Blended
Varies
Online input + in-person teaching practice block. Useful if live classroom experience is important to you.
Why Employers Value CELTA
Rigor
Pass rates for CELTA are not guaranteed — candidates can and do fail. This selective signal makes the certificate trustworthy to employers in a market where TEFL quality varies wildly.
Teaching Practice Component
Every CELTA graduate has taught real adult learners under observation — not simulated students, not peers role-playing. Employers know the candidate has already survived a live classroom.
Cambridge Brand
The University of Cambridge is globally recognized. Korean HR and public school coordinators know the name and treat CELTA as a premium credential versus generic TEFL.
International Recognition
CELTA is recognized across 130+ countries. A teacher who goes through CELTA has international career mobility — not just Korea-specific credentials.
CELTA Acceptance Across Korean Programs
Every major Korean public school program and private hagwon accepts CELTA in place of TEFL or TESOL. A properly issued Cambridge CELTA satisfies the qualifying-certificate requirement for the E-2 visa.
EPIK
Accepted in full. Certificate must be issued by a Cambridge-approved centre. The 120-hour structure satisfies EPIK's 100-hour minimum and typically qualifies for a higher salary level when combined with the observed teaching practice component.
SMOE (Seoul)
Accepted. SMOE recruitment specifically lists CELTA alongside TEFL and TESOL as qualifying certificates.
GEPIK (Gyeonggi)
Accepted. GEPIK contracts reference any recognized ESL teaching certificate — CELTA is always in scope.
GOE (Gyeongnam)
Accepted. Same standard as EPIK — certificate must be from a recognized awarding body.
Private Hagwons
Universally accepted. Many hagwons actively prefer CELTA graduates because the Cambridge name and teaching practice component reduce onboarding risk.
Universities
Accepted and often preferred alongside a Master's degree. For E-1 visa roles at Korean universities, CELTA strengthens applications significantly.
Salary Level Uplift
For EPIK and GEPIK, holding CELTA (with its built-in teaching practice) often qualifies applicants for a higher salary level compared to a purely online TEFL without a practical component. Exact placement depends on the full combination of degree, experience, and credentials — see the EPIK Salary Levels guide.
How to Find an Approved CELTA Centre
CELTA can only be delivered by centres approved by Cambridge English. Any course marketed as "CELTA" from a non-approved provider is invalid and should be avoided. Use the official Cambridge centre finder:
cambridgeenglish.org/centresFilter by country, city, and delivery mode (full-time, part-time, online, blended). The certificate is the same regardless of centre — differences are in tutors, facilities, and course fees.
CELTA Pass Grades
CELTA uses four possible outcomes. Most candidates who pass receive a standard Pass; only a minority of top performers earn Pass B or Pass A.
Pass
~65–70%The standard pass grade. Demonstrates competence in all required teaching and assignment areas. Fully qualifies you for ESL teaching roles worldwide.
Pass B
~20–25%Above-standard performance in multiple assessed areas. A signal to employers that the candidate performed consistently above the minimum bar.
Pass A
~3–5%Outstanding performance across teaching practice and written assignments. Rarely awarded. A strong career credential, especially for university roles.
Fail
~5%Did not meet the required standard. Unlike many TEFL courses, CELTA does not guarantee a pass — this is part of why the qualification is trusted.
Percentages are approximate industry averages reported by Cambridge English. Actual cohort distributions vary by centre.
CELTA Certificate FAQ
What's the difference between CELTA and DELTA?
CELTA is Cambridge's entry-level teaching qualification (120 hours) aimed at new or relatively new teachers. DELTA (Diploma in English Language Teaching to Adults) is Cambridge's advanced diploma — typically taken after several years of teaching experience. For Korea, CELTA is the relevant credential; DELTA is an advantage but not required.
Is an online-only CELTA accepted in Korea?
Cambridge approves fully online CELTA delivery, and the certificate is identical regardless of format. Korean public school programs (EPIK, GEPIK, SMOE, GOE) accept CELTA certificates issued by Cambridge-approved centres whether completed online, blended, or in-person — provided the teaching practice component with real learners is included.
How much does CELTA cost?
CELTA course fees typically range from USD $1,500 to $3,500 depending on location, format, and centre. In-person intensive courses in countries like Spain, Mexico, or Thailand are often cheaper than those in the UK or US. Online and blended formats vary. Always enroll through a Cambridge-approved centre — see cambridgeenglish.org/centres.
Does Korvia offer a CELTA course?
Korvia does not directly run CELTA courses — CELTA can only be delivered by Cambridge-approved centres. We partner with the London College of Teachers & Trainers (LCTT) for accredited TEFL certification, which is also fully accepted by EPIK and Korean public school programs. If you specifically want CELTA, locate an approved centre at cambridgeenglish.org/centres.
Do I need prior teaching experience to take CELTA?
No. CELTA is designed as an entry-level qualification — most trainees have little or no formal teaching experience. Candidates must have strong English language competence (native-speaker level or CEFR C1+), a standard of education that would allow university entry, and be at least 18 years old.
Are there age restrictions for CELTA?
Cambridge requires candidates to be at least 18 years old. There is no upper age limit. Individual centres may have their own admissions processes, including interviews and pre-course tasks.
Prefer TEFL, or Ready to Apply?
CELTA runs through Cambridge-approved centres worldwide. If you want a Korea-ready alternative that's faster and more affordable, Korvia partners with LCTT for accredited TEFL. Or start your application — TEFL / CELTA can be completed in parallel.