Medium of Instruction (MOI) Letter: How to Skip the English Test

By Olami, AbroadPilot · Reviewed September 2026

Not every applicant needs to sit IELTS, TOEFL, PTE, or Duolingo. If your previous education was conducted entirely in English, many universities will waive the test requirement in favor of a Medium of Instruction (MOI) letter — but this waiver is far from universal, and assuming you qualify without checking is a common, costly mistake. This guide explains how MOI letters work, who typically qualifies, and where the waiver does and doesn’t help. For the full picture on the tests themselves, see our IELTS vs TOEFL vs PTE vs Duolingo guide.

What Is a Medium of Instruction (MOI) Letter?

An MOI letter is an official document, usually issued by your previous school, college, or university’s registrar’s office, confirming that your prior program of study was taught entirely in English. Some universities accept this as sufficient proof of English proficiency on its own, letting you skip IELTS, TOEFL, PTE, or Duolingo entirely for admission purposes. It’s essentially a way of saying: “this applicant has already been demonstrating academic English ability for years — a standardized test would be redundant.”

Who Typically Qualifies

Common (though not universal) qualifying scenarios include:

• Completing your most recent full degree (bachelor’s, for master’s applicants) at an institution where all instruction, assessment, and coursework were conducted in English.
• Coming from a secondary school with an English-medium curriculum (for undergraduate applicants), particularly international or British-curriculum schools.
• Holding citizenship or having completed substantial prior education in a country where English is the official or majority-spoken language of instruction — policies vary considerably on which countries qualify automatically.

Universities differ significantly in how strictly they apply this — some require the entire degree to have been English-medium, others accept it if only the most recent one or two years were, and some don’t offer this waiver at all, regardless of your educational background.

How to Request an MOI Letter

1. Check your target university’s specific wording and template requirements first — many publish an exact format or required phrasing on their admissions website, and a generic letter that doesn’t match it may be rejected.
2. Contact your previous institution’s registrar or academic affairs office, since this is typically an official document on letterhead, not something a professor can informally provide.
3. Allow real processing time — registrar’s offices can take weeks to issue official letters, especially outside term time, so request this well before your application deadline.
4. Submit it alongside, not instead of, your other application documents, and clearly flag in your application that you’re requesting an English-test waiver on this basis.

What the Letter Needs to Say

At minimum, a usable MOI letter should confirm: your name and student ID at the issuing institution, the exact degree program and dates of study, an explicit statement that English was the sole medium of instruction and assessment throughout the program, and that it’s issued on official letterhead with a signature and contact details for verification. Vague or informal statements (a scanned email, a note from a single professor) are frequently rejected, since admissions offices need something they can verify if questioned.

Where MOI Waivers Typically Work — and Where They Don’t

MOI waivers are most commonly available for university admission purposes — they satisfy the institution’s own English proficiency check. But they do not necessarily satisfy a separate visa-level language requirement in destinations where one exists. For example, if your UK visa category specifically requires a Secure English Language Test (SELT), an MOI-based admission waiver from your university generally won’t substitute for that visa-side requirement — see our UK Student Visa English Requirements: SELT Explained guide for how that specific distinction works. Always check the admission waiver and the visa requirement separately, the same way you would for any of the four main English tests.

Common Reasons an MOI Request Gets Rejected

• Partial English instruction: if only some courses or years were taught in English, many universities won’t accept the waiver.
• Outdated education: some institutions only accept MOI letters if your qualifying degree was completed within a recent window (commonly the last two to five years) — policies vary.
• Wrong document format: a letter that doesn’t follow the university’s required template or lacks official letterhead is often bounced back for reformatting, costing you time.
• Program-specific exceptions: even where a university generally accepts MOI waivers, specific departments (particularly language-intensive ones like law or education) sometimes require a test regardless.

If You Don’t Qualify

If your background doesn’t clearly meet an MOI waiver, don’t gamble your application timeline on an uncertain request — register for a test as a backup in parallel. See our IELTS Band Score Requirements by University guide, or the full test comparison guide to pick the right test for your timeline and budget.

FAQ

Does every university accept MOI letters instead of an English test?

No. Policy varies widely by institution, and some don’t offer this waiver at all. Always check your specific university’s admissions page before assuming you qualify.

Can an MOI letter replace a visa-required English test?

Generally no. An MOI waiver typically addresses only the university’s own admission requirement. Where a visa route requires a specific approved test (like a UK SELT), you’ll usually still need to sit that test regardless of your MOI waiver status for admission.

How far in advance should I request an MOI letter?

Request it as early as possible — ideally several weeks to a couple of months before your application deadline — since registrar’s offices can be slow, especially outside of term time.

Related Reading

• IELTS vs TOEFL vs PTE vs Duolingo: Which to Take and What Score You Need
• IELTS Band Score Requirements by University
• UK Student Visa English Requirements: SELT Explained

Olami

Olami is the founder and lead writer at AbroadPilot. He started the site after going through the visa process himself — a German student visa in 2019 and a Canadian work permit in 2023 — and learning first-hand how confusing official immigration language can be, how often rules change, and how easy it is to lose money to bad advice. He spent three years as an international education and travel consultant, helping people source and verify the information that landed their visas and planned their trips. Every guide on AbroadPilot is built from official sources — embassy pages, government immigration portals, and .gov fee schedules — and reviewed as requirements change. AbroadPilot does not sell visas or applications; it is a free resource to help readers apply with confidence.