{
  "schemaVersion": 1,
  "title": "TEF Practice listening benchmark, 30 October 2026",
  "before": "2026-10-30T19:00:00Z",
  "form": {
    "skill": "listening",
    "mockSet": 1,
    "version": "listening-v2",
    "questions": 40,
    "hash": "09572a08664486e0059ea523bded4a452687f2ede9209d83bb0e9c1ea0747b36"
  },
  "basis": "Retained answers checked against the current question bank; historical question snapshots unavailable.",
  "population": "Signed-in practice learners, excluding known owner and test accounts; not a representative sample of official TEF candidates.",
  "selection": "First submitted timed mock-1 listening form per learner, on content version listening-v2, with no earlier retained assignment of any question from any version of this form. Earlier exposure outside retained signed-in history cannot be ruled out.",
  "scoring": "Correct answers / all 40 assigned questions. Wrong, invalid and omitted answers receive zero.",
  "quantiles": "Median averages the two middle values for an even sample; quartiles use nearest rank. Scores are out of 40. Descriptive peer results, not official TEF/NCLC conversions.",
  "primary": {
    "learners": 40,
    "assigned": 1600,
    "correct": 889,
    "skipped": 238,
    "correctPct": 55.6,
    "meanScore": 22.2,
    "median": 23,
    "p25": 16,
    "p75": 28,
    "histogram": [
      {
        "low": 0,
        "high": 9,
        "learners": 5
      },
      {
        "low": 10,
        "high": 19,
        "learners": 9
      },
      {
        "low": 20,
        "high": 29,
        "learners": 17
      },
      {
        "low": 30,
        "high": 40,
        "learners": 9
      }
    ],
    "parts": [
      {
        "part": "visualDialogue",
        "questions": 4,
        "learners": 40,
        "assigned": 160,
        "correct": 115,
        "correctPct": 71.9
      },
      {
        "part": "shortMessage",
        "questions": 16,
        "learners": 40,
        "assigned": 640,
        "correct": 407,
        "correctPct": 63.6
      },
      {
        "part": "radio",
        "questions": 10,
        "learners": 40,
        "assigned": 400,
        "correct": 184,
        "correctPct": 46
      },
      {
        "part": "varied",
        "questions": 10,
        "learners": 40,
        "assigned": 400,
        "correct": 183,
        "correctPct": 45.8
      }
    ]
  },
  "sensitivity": {
    "minimumAnswered": 36,
    "learners": 32,
    "assigned": 1280,
    "correct": 810,
    "skipped": 38,
    "correctPct": 63.3,
    "meanScore": 25.3,
    "median": 25,
    "p25": 21,
    "p75": 30,
    "histogram": [
      {
        "low": 0,
        "high": 9,
        "learners": 0
      },
      {
        "low": 10,
        "high": 19,
        "learners": 7
      },
      {
        "low": 20,
        "high": 29,
        "learners": 16
      },
      {
        "low": 30,
        "high": 40,
        "learners": 9
      }
    ],
    "parts": [
      {
        "part": "visualDialogue",
        "questions": 4,
        "learners": 32,
        "assigned": 128,
        "correct": 96,
        "correctPct": 75
      },
      {
        "part": "shortMessage",
        "questions": 16,
        "learners": 32,
        "assigned": 512,
        "correct": 365,
        "correctPct": 71.3
      },
      {
        "part": "radio",
        "questions": 10,
        "learners": 32,
        "assigned": 320,
        "correct": 173,
        "correctPct": 54.1
      },
      {
        "part": "varied",
        "questions": 10,
        "learners": 32,
        "assigned": 320,
        "correct": 176,
        "correctPct": 55
      }
    ]
  }
}