For students in South Korea the Duolingo English Test is an outbound instrument: one computer-adaptive exam of about an hour, reported on the 10–160 scale with four subscores and accepted by more than 6,000 institutions abroad, while Korean universities and employers still run largely on TOEFL, TEPS, TOEIC and IELTS. Knowing which side of that line your application sits on is the whole decision.

  • Score scale10–160 in steps of 5, plus four subscores
  • Validity2 years
  • Best useApplications to the USA, UK, Canada, Australia and other DET-accepting systems
  • In KoreaTOEFL, TEPS, TOEIC and IELTS dominate — check any Korean programme’s own list
  • Typical targets95–105 many bachelor’s, 110–120 most universities, 120–130 competitive
  • TeachingLive online classes in English with certified instructors, lessons recorded for review
  • CorrectionPersonal Speaking and Writing correction, WhatsApp support between sessions

Where Korean students apply — and the score each university publishes

The United States takes the largest share of Korean applicants, followed by Canada, Australia and the UK — all systems with deep DET acceptance. In the US the question is which number, not whether:

US universityPublished DET minimum
Columbia135
Duke, Cornell, Penn130
New York University125
Yale, MIT, Johns Hopkins120
UC Berkeley, Rice115
Purdue, Cincinnati110
Northeastern105
Arizona State, many state schools95–100

Canada publishes tighter minimums: 120 at Toronto, Waterloo, Queen’s and Ottawa, 125 at UBC and 115–125 at McGill. Australian requirements run from about 105 to 120.

In the UK, DET is mainstream at universities including York, Sussex, Southampton, Hertfordshire, Sheffield Hallam, Portsmouth and UCLan, typically at 105–125 with subscore rules that often read “overall 120, no subscore below 110” — see our UK score requirements guide.

The pattern: bachelor’s admission usually sits at 95–120 and postgraduate programmes at 115–135. Find your programme in Duolingo’s accepting-institutions directory, then confirm with admissions.

Does DET count inside Korea?

Assume not until a page says otherwise. Korean universities’ English-taught programmes and graduate schools publish accepted-test lists that are usually built around TOEFL iBT, IELTS and TEPS, with TOPIK covering Korean-language ability; the Duolingo English Test is not a standard entry on those lists, and Korean employers’ hiring screens still lean on TOEIC. Immigration requirements for a Korean study visa are set by the Korean authorities and the host university, not by Duolingo.

The practical consequence for a student in Seoul or Busan: use the DET for overseas admissions, and expect to sit TOEFL, TEPS or IELTS if your plan is a Korean programme, a domestic scholarship or a Korean employer. If a Korean institution is on your list, ask its admissions office directly whether a Duolingo score is accepted for your intake, and get the answer in writing.

The same caution applies to Hong Kong, where HKU’s and CUHK’s published English requirements do not include the Duolingo English Test.

Choosing your target score for the universities Korean students apply to

The DET reports an overall score on the 10–160 scale in steps of five, plus four subscores — Literacy, Comprehension, Conversation and Production. Universities publish a minimum overall score, and many publish a minimum in each subscore too, which is where unprepared candidates are caught: an overall 120 with a Production of 95 fails a requirement that the headline number appears to meet.

Work backwards from the requirements on this page rather than aiming at a round number:

  • 95–110 is the usual band for bachelor entry at many US state universities and at a range of Australian institutions.
  • 110–125 covers most UK degree courses, where the requirement is often written as “overall 120, no subscore below 110”, and much of the Canadian intake.
  • 120–135 is postgraduate and highly selective territory: 120 at Toronto, Waterloo, Queen’s and Ottawa, 125 at UBC and NYU, 130 at Duke, Cornell and Penn, 135 at Columbia.

Pick the highest requirement on your shortlist and plan a comfortable margin above it, because subscore floors — not the overall number — are what most often send an application back. Send us your university’s English-requirements page on WhatsApp and we will read it with you before you start.

DET or IELTS from Korea?

Once acceptance is settled, the choice comes down to format and to what each exam is valid for.

Duolingo English TestIELTS
FormatComputer-adaptive: questions get harder or easier as you answerFixed version, the same questions for everyone
LengthAbout 1 hourAround 3 hours
SpeakingRecorded answers to on-screen promptsFace-to-face interview with an examiner
Scoring10–160 overall plus four subscoresBands 0–9 in each of the four skills
Acceptance6,000+ institutions, for admissionVery broad, including UKVI visa routes

The counterweight is unchanged: IELTS and TOEFL are accepted everywhere, including visa processes and Korean institutions, and the DET is not. Read the requirement first, then choose the exam.

Visa and registration rules to check before you rely on DET

A university accepting your score and an immigration department accepting it are two different questions.

  • Australia: universities may accept DET for admission, but the Department of Home Affairs does not accept it for the subclass 500 visa — that needs IELTS, TOEFL iBT, PTE Academic or another listed test.
  • United Kingdom: DET is not a UKVI SELT. Degree-level admission is normally assessed by the university itself, but a pre-sessional or below-degree course can need a SELT.
  • Canada: the Student Direct Stream ended in November 2024, so the regular study permit applies and your institution decides what English evidence it wants.

Get it in writing from admissions, and see our complete DET guide for score reporting.

Studying online from South Korea

Studying with an academy in another time zone only works if nothing depends on your being awake at a particular hour. Every Teachero lesson is recorded, and you can review the recording afterwards, so a live session you cannot attend is never a session you lose.

Classes are taught fully in English by certified instructors who specialise in international English exams — the environment the DET asks you to perform in. Speaking and Writing are corrected personally, WhatsApp covers questions between sessions, and you sit full mock tests before the real thing. Arabic-language support is available for Arabic speakers.

Three shapes: the standard course (more days, fewer hours per day), the intensive course (fewer days, more hours per day) and the private tailored course, one-to-one around your weakest questions — see also our online course overview and DET FAQ.

Paying for the course from South Korea

Your Teachero course is paid by card online (Visa or Mastercard) from any country. Use a card with overseas payments enabled — domestic-only cards and some check cards are declined by international merchants, and your bank may add an overseas-use charge.

Other options are available on WhatsApp. Schedules are set per round — message us for the next round’s details.

Frequently asked questions

Is the Duolingo English Test accepted in South Korea?

For study abroad, widely — over 6,000 institutions accept it. For Korean universities, assume not until the programme’s own accepted-test list says so; those lists are usually built around TOEFL, IELTS and TEPS.

DET or IELTS for a Korean applicant?

Where your overseas universities publish a Duolingo band, the DET is usually the simpler exam to prepare for: one adaptive hour, an overall 10–160 score and four subscores. For Korean programmes, domestic scholarships or Korean employers, expect TOEFL, TEPS or IELTS instead.

What score should I aim for?

Most bachelor’s programmes want 95–110, most universities 110–120, and competitive or graduate programmes 120–135.

What is actually on the Duolingo English Test?

About fifteen question types in one adaptive exam: reading and completing passages, listening and typing, reading aloud, selecting real English words, an interactive reading set, interactive writing, and longer speaking and writing tasks that shape your Production and Conversation subscores. The exam adapts as you answer, so the questions get harder the better you do.

How long is a Duolingo English Test score valid?

Two years from the day the score is issued, and you can send it to as many institutions as you like within that period.

Can I use DET for an Australian student visa?

No. Universities may accept it for admission, but the Department of Home Affairs does not accept DET for the subclass 500 visa.

How do the classes work?

Live online classes in English with certified instructors, lesson recordings you can review afterwards, personal Speaking and Writing correction, full mock tests before your real attempt, and WhatsApp support between sessions.

Join the next round — send your university’s English requirements page to us on <a href=”https://wa.me/201055785572″>WhatsApp</a> (+20 105 578 5572), and message us on <a href=”https://wa.me/201055785572″>WhatsApp</a> once you know the score you need.

Last updated: September 2026