Method

How we measure, and what we will not claim

Updated 2026-08-18 · Independent educational resource

The standard we hold ourselves to

Independent resource. SLP Command is not affiliated with NATO, BILC, any Ministry of Defence, or any official examining body. National tests implement STANAG 6001 descriptors differently. Always confirm administration details with the authority that runs your sitting.

One rule sits under everything this product does: nothing is asserted about your English without measurement, and every recommendation names the evidence that produced it.

That is easy to write on a marketing page and expensive to keep. It rules out the features candidates most often ask for — a single motivating score, a countdown to readiness, a pass estimate — because none of them can be produced honestly from the evidence available.

Three kinds of claim, kept apart

Anywhere this site makes a statement about the exam, it belongs to one of three categories, and we try never to let them blur:

The glossary labels every entry this way, for the same reason.

What we will not claim

These are not oversights waiting to be filled in. Each one is refused on purpose.

  • No official status. Not NATO, not BILC, not a Ministry of Defence, not an examining body, and not accredited by any of them.
  • No pass probability. No percentage, no traffic light, no "you are ready" — we hold no official outcomes to calibrate against.
  • No guarantee of any result. No product can promise you a language exam, and one that implies otherwise is telling you something about itself.
  • No claim that our estimate is your profile. An estimate from practice evidence is not a rating from a board.
  • No superlatives we cannot substantiate. Never "the best" and never "the only" — those are marketing positions, not measurements.
  • No endorsement by anyone. No unit, headquarters, school or officer has endorsed this product.

These constraints are written down in an internal claims registry and enforced by an automated test that scans every public page, in English and Spanish, before it can ship. That is not a promise of good intentions; it is a build step that fails.

What the AI actually does, and where it is weak

AI evaluates Writing and Speaking. It is used because it can give a candidate a reasoned response in seconds where a teacher cannot, and it is constrained because it is not a rater.

Reasonable at: whether a response performed the task set, how a text is organised, whether accuracy is consistent enough to stop costing the reader effort, and producing an improved version beside yours so the difference is visible.

Weak at: borderline calls between adjacent levels, unusual registers and humour, anything depending on the specific conventions of your national paper, and any judgement that needs more evidence than one response contains.

Where the evidence is thin, the product is designed to say "limited evidence" rather than produce a confident number. An estimate that admits uncertainty is worth more than one that does not, even though it satisfies less.

Why the sources are on the page

Every explanatory page here carries the works it relies on, with a note on what each one says. That is unusual for a commercial site and it is the point: a claim about a defence language standard that cannot show its source is a claim you should discount.

Where something is publicly described but not officially confirmed — national registration routes, sitting windows — we say so and tell you to verify it with the body that convenes your exam. We would rather be less convenient than wrong about a date someone plans a career around.

Questions

Is SLP Command an official STANAG 6001 assessment?

No. It is an independent educational trainer. It is not affiliated with NATO, BILC, any Ministry of Defence, or any examining body, and its AI feedback is indicative guidance, not an official rating.

Will it tell me my chance of passing?

No, and this is deliberate. A percentage would require calibration against official outcomes that this product does not hold. People book exams and make career decisions on that number, so inventing one would be the most damaging thing we could ship.

Can an AI really judge language proficiency?

It can judge some things usefully and others poorly. It is reasonable at task achievement, structure and consistency of accuracy. It is weaker on borderline judgements, unusual registers and anything requiring knowledge of your national paper. Where evidence is thin, the product is built to say so rather than produce a confident number.

Sources

  1. BILC — STANAG 6001 (Bureau for International Language Coordination)Describes Edition 5 as “the NATO agreed standard for language curriculum, test development, and for recording and reporting Standardized Language Profiles (SLPs)”.
  2. Adubato, M. & Efthymiopoulos, M-P., “Capacity Language Building in NATO”, JAPCC Journal Ed. 19 (2014)“There is no official NATO test but merely national interpretations of the language levels outlined in STANAG 6001 and often one nation’s Level 2 is another nation’s Level 3.”