The table characterizes the proficiency level (columns) of programmers of a particular programming language in the context of different programming activities (rows).

This table is inspired by the CEFR table of the same name, for assessing proficiency in natural languages. Like the CEFR, this table divides learners into three broad level divisions: "Basic user" (A), "Independent user" (B) and "Proficient user" (C). The broad divisions are each further divided in two levels (A1, A2, B1, B2, C1, C2) that correspond to testable milestones in language acquisition.

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