ILR vs. ACTFL vs. CEFR: Language Proficiency Scales Compared
If you’ve spent any time around language training, testing, or hiring, you’ve probably run into ILR, ACTFL, and CEFR, three proficiency scales that all claim to measure the same thing, yet were built for different audiences and don’t line up perfectly. A civilian corporate program might reference ACTFL levels, a federal contract might require an ILR rating, and an international partner might ask for a CEFR certificate. Understanding how ILR vs. ACTFL vs. CEFR compare can save real time and confusion, whether you’re writing a contract requirement, evaluating a candidate, or choosing a training program.
Here’s what each scale actually measures, how they relate to one another, and which one is likely to matter for your program.
What Is the ILR Scale?
The Interagency Language Roundtable (ILR) scale is the U.S. federal government’s standard measure of language proficiency. It grew out of proficiency testing work originally developed by the Foreign Service Institute, which is why some in the field still call it the “FSI scale.”
ILR proficiency runs from 0 (no functional ability) to 5 (functionally equivalent to a well-educated native speaker), with “+” designations in between — 0+, 1+, 2+, 3+, 4+ — for skill levels that clearly exceed one base level without fully meeting the next. Ratings are typically assigned separately for speaking, listening, reading, and writing, and, depending on the agency, for translation and interpretation.
Because ILR is the federal standard, it appears consistently in government work: language-designated positions at embassies and consulates, linguist requirements on federal contracts, and proficiency thresholds for security-cleared roles all reference the ILR scale.
What Is the ACTFL Scale?
The American Council on the Teaching of Foreign Languages (ACTFL) scale is standard in most U.S. schools and civilian language programs. Rather than numbers, it uses descriptive tiers. Novice, Intermediate, Advanced, Superior, and Distinguished, with Low, Mid, and High sublevels within the Novice, Intermediate, and Advanced tiers.
ACTFL proficiency is typically measured through an Oral Proficiency Interview (OPI) or its computer-delivered version (OPIc). Because it was built for classroom and workplace learning rather than government service, ACTFL is the scale you’ll most often see on academic transcripts, corporate language benefit programs, and civilian language certifications.
What Is the CEFR Scale?
The Common European Framework of Reference for Languages (CEFR) was developed by the Council of Europe and is the standard across most European education systems, as well as an increasingly common reference point for international business and immigration purposes worldwide.
CEFR organizes proficiency into six bands grouped in three pairs: A1 and A2 (Basic User), B1 and B2 (Independent User), and C1 and C2 (Proficient User). If you’ve seen a job posting asking for “B2 English” or a language school advertising “C1 exam prep,” that’s CEFR.
ILR vs. ACTFL vs. CEFR: How the Scales Compare
All three scales are trying to describe the same underlying progression of ability. However, they weren’t designed together, and each relies on its own testing methodology and weighting of skills like accuracy, fluency, and cultural context. That’s why any cross-mapping between them is an approximation rather than an official conversion. Use the table below as a general orientation. If a specific contract, visa, or certification requirement hinges on an exact equivalency, confirm it directly with the requesting agency or institution.
| ILR | ACTFL | CEFR |
|---|---|---|
| 0 | Novice | A1 |
| 0+ / 1 | Intermediate | A2 |
| 1+ | Advanced (Low–Mid) | B1 |
| 2 | Advanced (High) | B2 |
| 2+ / 3 | Superior | C1 |
| 4 | Distinguished | C2 |
| 5 | Native/bilingual proficiency | Beyond standard scale ranges |
Which Proficiency Scale Applies to You?
In practice, the right scale usually comes down to who’s asking:
- Government agencies and contractors almost always need ILR, since it’s the baseline for language-designated positions and most federal contracts.
- Academic institutions and corporate training programs typically default to ACTFL, since it’s built around instructional settings and classroom progression.
- International organizations, European partners, and many immigration or citizenship processes tend to reference CEFR instead.
It’s increasingly common for a single organization to need more than one. For example, a federal contractor that also runs a corporate language benefit program may need to track proficiency across two scales.
How DLS Tests and Trains to All Three Standards
Because our clients span federal agencies, corporations, and academic institutions, we test and train to whichever standard actually applies to your program, rather than asking you to translate your requirements into a scale that doesn’t fit your context. Whether you need ILR-based testing for a government contract, ACTFL-based benchmarking for a corporate language program, or CEFR alignment for an international team, our Language Training Supervisors can help you figure out exactly what you need and build a program around it.
