SAT, GRE, GMAT, IELTS, TOEFL, PTE, or Duolingo: Which Test Do You Actually Need?

Seven exams get lumped into one confusing category, but they do two unrelated jobs: the SAT, GRE, and GMAT test academic aptitude for admissions, while TOEFL, IELTS, PTE, and Duolingo test English proficiency for admissions and visas. A strong GRE score doesn't satisfy an English requirement, and a strong IELTS score doesn't satisfy an admissions one. IELTS remains the only test accepted almost everywhere for both admissions and visas across the UK, Canada, Australia, and the US.

Students walk in asking "should I do IELTS or GRE" as though they're competing options. They're not. It's the single most common confusion we clear up in a first counselling session, and it costs real time when it goes uncorrected: months spent prepping for the wrong test, or a strong score that satisfies your university but not your visa office. An admissions test measures academic aptitude and lets a university rank you against other applicants. An English proficiency test measures whether you can function in an English-medium classroom, and it's frequently a separate visa requirement, not just a university one. Most master's and PhD applications need one test from each category.

SAT — just over two hours, scored 400–1600. The main undergraduate admissions test for the US, Canada, and some European programs, sat by nearly 1.9 million students in 2024 alone. Only relevant if you're applying at undergraduate level; irrelevant for master's or PhD applications.

GRE — just under two hours, scored 260–340. Covers master's and PhD admissions across the US, Canada, Australia, Germany, and the UK. The detail that actually changes your prep plan: a meaningful and growing share of graduate programs, including strong ones, have made the GRE optional or dropped it for certain applicant profiles — particularly candidates with several years of relevant work experience. Don't assume it's mandatory. Check the specific program's current policy before you spend two months prepping for a test you didn't need.

GMAT — roughly two hours fifteen minutes, scored 205–805. The standard for MBA admissions. Here too, the trend line matters more than the headline requirement: 14 of the top 25 US MBA programs now offer a test-waiver option for candidates who can show strong quantitative ability through prior academic work or professional experience. If your GPA and work history are already strong in quant terms, it's worth checking for a waiver before committing to either exam. Where a program does require a score, GRE and GMAT are largely interchangeable: most business schools run an official conversion tool between the two, so picking GRE over GMAT isn't a competitive disadvantage.

This is the group that actually needs the closer look, because acceptance varies by both university and visa office, and the two lists don't match.

IELTS stays the safest default specifically because it's the one test on every accepted list: admissions and visa, across all four major English-speaking destinations. TOEFL and PTE are strong alternatives once you've separately confirmed your specific university and your specific visa category both accept them, because "accepted for admissions" and "accepted for the visa" are two different checks, not one. Duolingo is best treated purely as a fast, cheap admissions tool — book it if you're racing a deadline and need a result inside 48 hours — not as a substitute for whatever your visa office actually requires.

Confirm your visa category's accepted English test before you confirm your university's preferred one, not the other way round. Universities generally accept a wider range of tests than visa offices do. Anchor to the more restrictive requirement first, and the university side takes care of itself. Anchor to the university first, and you risk the exact scenario we see every intake: a test score that got the student admitted, and doesn't satisfy the visa application, with weeks left on the clock to sit an entirely different exam. The UK student visa documents and money requirements are covered in detail in our step-by-step visa guide.

Two separate questions, two separate tests. For admissions: SAT if undergraduate, GRE or GMAT if postgraduate, and check for a waiver before you assume either is mandatory. For English proficiency: default to IELTS unless you've specifically verified both your university and your visa office accept an alternative, in which case TOEFL or PTE are genuine options and Duolingo is a fast admissions-only fallback. Confirm the visa list first. It's the shorter list, and it's the one that actually gates your ability to travel.