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STANAG is promulgated by the Director NATO Standardization Agency under the authority vested in him by the NATO Standardization Organisation Charter.
The aim of this agreement is to provide NATO Forces with a table describing language proficiency levels.
PROFICIENCY LEVELS
The language proficiency skills described in Annex A are broken down into six levels coded 0 through 5. In general terms, skills may be defined as follows:
Level 0 – No proficiency
Level 1 – Survival
Level 2 – Functional
Level 3 – Professional
Level 4 – Expert
Level 5 – Highly-articulate native
