Lean and efficient with no padding or explanations of concepts Claude already knows; every line gives a rule, a file path, or a concrete instruction.

Concrete guidance throughout — specific file paths, a 1-10 rating scale, the exact '✓ learned YYYY-MM-DD' marking format, and explicit scope constraints ('NEVER syntax or code trivia'). As an instruction-only skill, the absence of code is not penalized because the guidance is specific and actionable.

A clearly sequenced process — state-check first, then the per-answer loop (6 numbered steps), then the post-question-7 summary — with explicit decision checkpoints (skip minor misses; bump a rating only if genuinely deserved and record the reason).

Under 50 lines with well-organized sections (Files, Question rules, After every single answer, After question 7) and no need for external references; per the simple-skills scoring note this scores 3 on organization alone.

Lists multiple concrete actions — 'Gauge... through 7 adaptive questions', 'log verbatim answers with honest ratings', and 'grow a learning plan from the gaps found' — matching the anchor for listing several specific concrete actions.

Clearly states what it does (gauge/log/grow a plan) and when to use it via an explicit 'Use when...' clause with multiple triggers, satisfying both halves.

Natural phrases a user would actually say — 'level up', 'level-up session', 'quiz me', 'gauge my knowledge' — give good coverage of common variations.

An explicit differentiator ('this finds and maps gaps; the `teach` skill delivers lessons on them') carves a clear niche with distinct triggers unlikely to fire for the wrong skill.