{
  "artifact": "PassFast public research data dictionary",
  "version": "1.1.0",
  "created_date": "2026-09-13",
  "applies_to": {
    "public_library": "https://eaexam.co/ea-exam/research/",
    "publication_scope": "Aggregate percentages and qualitative research methods"
  },
  "privacy_boundary": {
    "published": [
      "Aggregate accuracy percentages",
      "Percentage-point differences",
      "Percentage distributions",
      "Qualitative method and evidence-strength labels"
    ],
    "withheld": [
      "Learner and cohort totals",
      "Answer-activity totals",
      "Numeric activity and evidence thresholds",
      "Unanswered-response measures",
      "Learner-level rows and identifiers"
    ]
  },
  "public_fields": {
    "part": "SEE part label.",
    "domain": "Current PSI objective-domain label within an exam part.",
    "subject": "Content subject mapped beneath a domain.",
    "cohort": "Plain-language comparison-group label without its underlying size.",
    "accuracy": "Accuracy for the named aggregate group, on a zero-to-one-hundred percentage scale.",
    "community_accuracy": "Learner-weighted aggregate accuracy for the eligible community, in percent.",
    "top_accuracy": "Learner-weighted aggregate accuracy for the highest-accuracy quartile, in percent.",
    "top_quartile_cutoff": "Minimum per-learner accuracy entering the highest-accuracy quartile, in percent.",
    "performance_gap": "Difference between top and community accuracy, in percentage points.",
    "priority_share": "Share of weighted study priority within one exam part, in percent.",
    "question_share": "Share of the stated historical question inventory, in percent.",
    "duration_share": "Share of retained recorded duration by activity type, in percent; it is not verified attention.",
    "evidence_label": "Qualitative strength label derived from internal evidence checks. The underlying threshold and totals are withheld."
  },
  "method_notes": [
    "Community accuracy is calculated per eligible learner before those percentages are averaged, so heavier activity does not receive extra weight.",
    "Top performers are the highest-accuracy quartile within the same exam part.",
    "All comparisons are observational and do not establish cause, national performance, official score, or probability of passing.",
    "The public library can be rebuilt from retained internal evidence, but the private aggregate inputs are not public downloads."
  ]
}