{"slug":"diagnostic-pretest-design","source_name":"diagnostic-pretest-design","name":"Diagnostic Pretest Design","description":"When you need to build a short check to run BEFORE teaching something, design it so each question targets exactly one prerequisite skill — so a wrong answer pinpoints the specific missing prerequisite instead of yielding an undifferentiated total score. Use when designing a pre-assessment, readiness check, or placement diagnostic ahead of a lesson or unit. Do NOT use to grade a completed test, to reverse-engineer the misconception behind one wrong answer, to generate extra practice problems, or to write a lesson plan or curriculum.","version":1,"lift":{"pass_rate_delta_pts":null,"pass_rate_pct":46.2,"total_cases":13,"passed_cases":6,"tokens_delta_pct":312.9,"turns_delta_pct":0,"verdict":"mixed","benchmark_model":"gemini-3.5-flash","grading_method":"judged","completed_at":"2026-07-08T23:38:16.557412+00:00"},"skill_score":null,"benchmark_models":[{"model":"gemini-3.5-flash","headline":false,"delta_pts":null,"with_pass_pct":null,"without_pass_pct":null,"tokens_delta_pct":312.9,"turns_delta_pct":0,"total_cases":13,"cases_aggregated":13,"verdict":"mixed","never_hurt":true,"completed_at":"2026-07-08T23:38:16.557412+00:00","run_id":"7797274e-1b16-470f-beda-0695116cabe7","version_number":1,"is_latest_version":true,"gate":"not_comparable"}],"trust":{"skill_safety":"passed","safety_status":"clean","intent_verdict":"safe","content_status":"clean","indexable":false},"license":null,"install_count":0,"manifest_hash":"e58f5d71c3ae8d1af73f929e4f92a28367273480e6f02b944f86ece38a2049b9","raw_url":"https://app.decimal.ai/s/diagnostic-pretest-design/SKILL.md","scorecard_url":"https://app.decimal.ai/skills/diagnostic-pretest-design"}