Which English Proficiency Tests Do US Universities Accept?
US universities typically accept four English proficiency tests for international students: TOEFL iBT (ETS) (most widely accepted), IELTS Academic, Duolingo English Test, and Pearson PTE Academic. Some universities also accept Cambridge English exams (B2 First, C1 Advanced, C2 Proficiency).
TOEFL and IELTS remain the gold standard for elite universities; Duolingo has expanded significantly in acceptance since 2020 – over 2,200 US universities now accept it including Harvard, MIT, Yale, Columbia, and Stanford. Some elite programs (NYU Stern, Carnegie Mellon Engineering) require higher Duolingo scores (130+) than typical thresholds. Verify each university’s accepted tests and minimum scores before testing. See our international students pillar guide for testing strategy in broader context.
What Minimum Test Scores Do Elite US Universities Require?
| University | TOEFL iBT (pre-2026) | TOEFL (2026+) | IELTS Academic | Duolingo (DET) |
|---|---|---|---|---|
| Harvard | 100+ | ~4.5+ | 7.0+ | 120+ |
| Yale | 100+ | ~4.5+ | 7.0+ | 120+ |
| Princeton | 100+ | ~4.5+ | 7.0+ | 125+ |
| MIT | 90-100+ | ~4.5+ | 7.0+ | 125+ |
| Stanford | 100+ | ~4.5+ | 7.0+ | 120+ |
| Columbia | 100+ | ~4.5+ | 7.0+ | 120+ |
| UPenn | 100+ | ~4.5+ | 7.0+ | 125+ |
| NYU Stern | 105+ | ~5+ | 7.5+ | 130+ |
| Carnegie Mellon (Eng) | 102+ | ~5+ | 7.5+ | 120+ |
| UC system | 100+ (from Jan 2026: 4.5+) | 4.5+ | 7.0+ | 115+ |
Elite US universities typically require TOEFL iBT scores of 100-110 minimum, with competitive applicants scoring 105-118 (out of 120 on the pre-2026 scale). IELTS requirements typically run 7.0-7.5+. Duolingo requirements typically run 120-130+. The DET-IELTS conversion is approximately: DET 120 = IELTS 7.0, DET 130 = IELTS 8.0, DET 140 = IELTS 8.5+.
Who Needs to Take English Proficiency Tests?
International students whose native language is not English typically must submit English proficiency test scores. Universities often waive English proficiency requirements for:
- Students whose native language is English (UK, Ireland, Canada outside Quebec, Australia, New Zealand)
- Students who completed substantial portions of secondary education (typically 4+ years) at English-medium schools, even in non-English-speaking countries (international schools in India, Singapore, Hong Kong, etc.)
- Students with strong SAT or ACT scores demonstrating English fluency (specific score thresholds vary by university)
- Students achieving specific A-Level or IB English Literature/Language scores
International students should verify waiver eligibility with each target university before testing. Unnecessary testing wastes time and money. However, applicants who qualify for waivers often benefit from taking the test anyway for additional credibility – particularly applicants from countries where English-medium education quality varies substantially.
Should International Students Take Both SAT/ACT and English Proficiency Tests?
Yes, in most cases. International students typically benefit from submitting both SAT Suite (College Board) or ACT scores AND English proficiency test scores. The SAT or ACT demonstrates academic competitiveness against US applicants; the English proficiency test confirms language readiness for English-medium instruction.
Strong applicants from English-medium schools sometimes qualify for English proficiency test waivers but still benefit from submitting scores for credibility. Test-optional SAT/ACT policies at many US universities apply to internationals – but submitting strong scores typically helps applicants from countries with grading systems unfamiliar to US admissions readers. Specifically, applicants from countries with grade inflation concerns (US itself, several European systems) or grading systems that compress scores at the top (Singapore A-Levels, China Gaokao) benefit substantially from third-party score calibration. International students should plan for both test categories during 11th grade and early 12th grade.
How Do TOEFL, IELTS, and Duolingo Compare?
The three tests differ substantially in format, difficulty, and convenience:
| Feature | TOEFL iBT | IELTS Academic | Duolingo English Test |
|---|---|---|---|
| Duration | ~3 hours | ~2 hours 45 minutes | ~1 hour |
| Format | In-person or home edition | In-person (live speaker) | Fully online, home-administered |
| Speaking | Recorded responses | Live examiner interview | Recorded responses + video interview |
| Difficulty | Adaptive integrated tasks | Section-based fixed difficulty | Adaptive difficulty |
| Cost | $190-$300 | $215-$250 | $65-$70 |
| Results time | 4-8 days | 13 days (paper), faster online | 48 hours |
| Universities accepting | ~12,000 globally | ~12,000 globally | ~5,800 globally |
Convenience favors Duolingo (online, short, affordable, fast results). Comprehensive evaluation favors TOEFL or IELTS (longer, more thorough, more universally accepted at elite institutions). Cost favors Duolingo by a substantial margin. Strong applicants typically choose based on personal test-taking strengths, target university preferences, and budget. Some applicants take multiple tests to optimize results across different application targets.
When Should International Students Take English Proficiency Tests?
International students should typically take English proficiency tests during the spring or summer of 11th grade or early 12th grade – ideally with results available by October of senior year for early application deadlines. Strong applicants follow this timeline:
- 10th or early 11th grade: Take a practice test to identify preparation needs
- 11th grade: Complete focused preparation across 3-6 months
- Spring/summer 11th grade: Take official test (allows time for retakes)
- Late summer or early fall 12th grade: Retake if necessary
- October-November 12th grade: Submit final scores with applications
Most universities accept multiple test attempts and use the highest scores. Score validity is typically 2 years from test date – results from 9th or 10th grade testing may expire before college matriculation. Students who test too early may need to retest closer to application time even if original scores were strong.
How Does the New 2026 TOEFL Scale Affect Applicants?
TOEFL iBT (ETS) launched a new scoring scale effective January 2026, replacing the longstanding 0-120 scale with a 1-6 scale. The new scale uses half-point increments (1.0, 1.5, 2.0, 2.5… up to 6.0). The conversion roughly equates: old TOEFL 100 ≈ new TOEFL 4.5+; old TOEFL 110 ≈ new TOEFL 5.0+; old TOEFL 118 ≈ new TOEFL 6.0.
Universities are transitioning to the new scale gradually. UC system updated requirements to the new scale effective January 2026 (minimum 4.5+). Some universities continue to publish both old and new scale equivalents. Applicants taking TOEFL in 2026 should verify which scale each target university uses for evaluation – mismatched scale comparisons can cause confusion. Applicants who took TOEFL on the old scale and applied before the 2026 transition can typically continue using old scores within the 2-year validity window.
What Test Preparation Approach Works Best?
Strong English proficiency test preparation typically involves 3-6 months of structured study. The preparation should include diagnostic practice tests, focused weakness improvement, official practice materials from the test maker, simulated full-length tests under timed conditions, and authentic English exposure through reading, listening, speaking, and writing in the months before testing.
Test-specific preparation matters because the three major tests evaluate English differently. TOEFL emphasizes integrated tasks combining reading, listening, and speaking/writing. IELTS evaluates each skill separately with section-specific timing. Duolingo uses adaptive difficulty that adjusts to performance. Strong preparation includes test-specific practice materials, not generic English learning. Many international students benefit from formal test preparation courses or one-on-one tutoring for 2-4 months before the official test.
What Testing Strategy Work Do International Families Need?
International families navigating testing strategy typically benefit from external strategy work in three areas: test selection matching applicant strengths to optimal test format (TOEFL vs IELTS vs Duolingo), preparation timeline planning that allows for retakes within the senior year application window, and target score determination based on each target university’s thresholds and competitive applicant profiles.
Oriel Admissions guides international families through testing strategy as part of broader US admissions consulting. Schedule a consultation to discuss your family’s testing strategy. See also our international students strategic guide and international Common Application strategy.
Frequently Asked Questions About International Student Test Requirements
Four are widely accepted: TOEFL iBT, IELTS Academic, the Duolingo English Test, and PTE Academic, with some schools also taking Cambridge exams. The practical shift is Duolingo: over 2,200 US universities now accept it, including the Ivies and Stanford. The one trap is assuming a single threshold, since selective programs like NYU Stern set higher Duolingo cutoffs than the norm, so confirm each school’s list before booking.
Aim for 100 to 110 as a floor and 105 plus to be competitive at top schools; the Ivies generally recommend 100 plus with no hard minimum. Watch for per-section minimums (often 25 in writing and speaking) that can sink an otherwise fine overall score. The big change: from January 2026 TOEFL moves to a 1 to 6 scale, where roughly 4.5 plus is the new equivalent, so check which scale your target school is using.
Plan for a 7.0 to 7.5 overall band with nothing below 7.0 in any section; Harvard, Yale, and Princeton lean toward 7.5 plus, while MIT and Stanford sit around 7.0. Two things trip people up: only IELTS Academic counts (General Training is not accepted), and section minimums can matter even when your overall band clears the bar. Budget roughly 215 to 250 dollars per sitting.
On the 10 to 160 scale, target 120 to 135 for elite schools (Harvard and Yale around 120, MIT and Princeton around 125, NYU Stern 130 plus). As a rough translation, 120 maps to IELTS 7.0 and 130 to about 8.0. Its real advantages are speed and cost: about 65 to 70 dollars and results in 48 hours, which makes it the easiest test to retake if a first score falls short.
If your first language is not English, assume you need it unless a school says otherwise. Common waivers cover native-English countries, four-plus years at an English-medium school, and sometimes strong SAT/ACT or A-Level/IB English results. Because requirements vary, check each school’s waiver rules before testing; an unnecessary exam just burns time and money you could spend elsewhere.
Usually yes, because they prove different things: the SAT or ACT shows academic standing against US applicants, while the proficiency test confirms you can handle English-medium coursework. Even applicants who qualify for a proficiency waiver often submit a score for credibility. And while many schools are test-optional, a strong SAT or ACT especially helps students from grading systems US readers find hard to interpret.
Pick based on your strengths and your budget. TOEFL (about 3 hours, center-based, 190 to 300 dollars) and IELTS (under 3 hours with a live speaking section, 215 to 250 dollars) are the thorough, traditional options. Duolingo (about 1 hour, fully at-home, adaptive, 65 to 70 dollars) wins on convenience and cost. None is universally easier; choose the format that suits how you test.
Target results by October of senior year for early deadlines, which means testing in spring or summer of 11th grade. A good sequence: a diagnostic in 10th or early 11th grade, 3 to 6 months of focused prep, the official sitting that spring or summer, and a retake in early fall if needed (most schools superscore attempts). Mind the 2-year validity, so do not test so early that scores expire before you enroll.
Sources: TOEFL iBT (ETS), IELTS, Duolingo English Test, Pearson PTE Academic, Cambridge English, SAT Suite (College Board), ACT, Institute of International Education, EducationUSA, and NACAC.
About Oriel Admissions
Oriel Admissions is a Princeton-based college admissions consulting firm advising families nationwide on elite university admissions strategy. Our team includes former admissions officers from leading Ivy League and top-ranked institutions. To discuss your family’s admissions strategy, schedule a consultation.
