{
 "meta": {
  "source": "OECD (2026), PISA 2025 Results (Volume I), Chapter 2 StatLink https://stat.link/xgs41b (Workbook v1, 08.09.2026); Kopie aus github.com/TeancumTian/pisa-2025-analysis (abgerufen 2026-09-16)",
  "extracted": "2026-09-16",
  "se_method": "SE = (CI_oben − CI_unten) / (2·1,96) aus publiziertem 95-%-KI (Table I.2.o3–o6)",
  "license": "OECD Terms & Conditions / CC BY 4.0 – Quellenangabe je Wert"
 },
 "oecd_average": {
  "name": "OECD average",
  "pct_sci": {
   "p10": 351.2,
   "p25": 411.5,
   "p50": 483.5,
   "p75": 552.4,
   "p90": 609.6
  },
  "gap_sci": 258.4,
  "low": {
   "sci": 25.7
  },
  "top": {
   "sci": 7.2
  },
  "change_2022_2025": {
   "sci": {
    "delta": -2.8,
    "sig": false
   },
   "read": {
    "delta": -14.3,
    "sig": true
   },
   "math": {
    "delta": -9.4,
    "sig": true
   }
  },
  "trend_10y": {
   "sci": {
    "delta10y": -6.7,
    "sig": true
   },
   "read": {
    "delta10y": -27.0,
    "sig": true
   },
   "math": {
    "delta10y": -23.9,
    "sig": true
   }
  }
 },
 "systems": {
  "B-S-J-Z (China)": {
   "name": "B-S-J-Z (China)",
   "flag_sampling": false,
   "mean": {
    "sci": 597.0,
    "read": 526.5,
    "math": 612.4,
    "cps": 560.3
   },
   "se": {
    "sci": 2.04,
    "read": 1.79,
    "math": 2.55,
    "cps": 1.53
   },
   "ci95": {
    "sci": [
     593.0,
     601.0
    ],
    "read": [
     523.0,
     530.0
    ],
    "math": [
     607.0,
     617.0
    ],
    "cps": [
     557.0,
     563.0
    ]
   },
   "rank_all": {
    "sci": [
     1,
     1
    ],
    "read": [
     1,
     2
    ],
    "math": [
     1,
     1
    ],
    "cps": [
     2,
     4
    ]
   },
   "rank_oecd": {
    "sci": null,
    "read": null,
    "math": null,
    "cps": null
   },
   "oecd": false,
   "pct_sci": {
    "p10": 481.9,
    "p25": 542.0,
    "p50": 602.5,
    "p75": 658.0,
    "p90": 705.0
   },
   "gap_sci": 223.0,
   "levels_sci": {
    "below_1b": 0.0,
    "l1b": 0.4,
    "l1a": 2.1,
    "l2": 7.9,
    "l3": 20.9,
    "l4": 33.1,
    "l5": 26.3,
    "l6": 9.3
   },
   "low": {
    "sci": 2.5
   },
   "top": {
    "sci": 35.6
   }
  },
  "Singapore": {
   "name": "Singapore",
   "flag_sampling": false,
   "mean": {
    "sci": 559.9,
    "read": 534.9,
    "math": 562.9,
    "cps": 563.5
   },
   "se": {
    "sci": 1.79,
    "read": 2.04,
    "math": 1.53,
    "cps": 1.28
   },
   "ci95": {
    "sci": [
     556.0,
     563.0
    ],
    "read": [
     531.0,
     539.0
    ],
    "math": [
     560.0,
     566.0
    ],
    "cps": [
     561.0,
     566.0
    ]
   },
   "rank_all": {
    "sci": [
     2,
     2
    ],
    "read": [
     1,
     2
    ],
    "math": [
     2,
     2
    ],
    "cps": [
     2,
     4
    ]
   },
   "rank_oecd": {
    "sci": null,
    "read": null,
    "math": null,
    "cps": null
   },
   "oecd": false,
   "pct_sci": {
    "p10": 410.6,
    "p25": 491.2,
    "p50": 571.4,
    "p75": 636.2,
    "p90": 686.6
   },
   "gap_sci": 276.0,
   "levels_sci": {
    "below_1b": 0.2,
    "l1b": 2.1,
    "l1a": 7.5,
    "l2": 13.5,
    "l3": 22.1,
    "l4": 28.5,
    "l5": 20.0,
    "l6": 6.1
   },
   "low": {
    "sci": 9.9
   },
   "top": {
    "sci": 26.1
   },
   "change_2022_2025": {
    "sci": {
     "delta": -1.6,
     "sig": false
    },
    "read": {
     "delta": -7.7,
     "sig": true
    },
    "math": {
     "delta": -11.8,
     "sig": true
    }
   },
   "trend_10y": {
    "sci": {
     "delta10y": 7.3,
     "sig": true
    },
    "read": {
     "delta10y": -2.6,
     "sig": false
    },
    "math": {
     "delta10y": 0.8,
     "sig": false
    }
   },
   "rank_range_sci": {
    "2022": [
     1,
     1
    ],
    "2025": [
     1,
     1
    ]
   }
  },
  "Macao (China)": {
   "name": "Macao (China)",
   "flag_sampling": false,
   "mean": {
    "sci": 540.8,
    "read": 501.1,
    "math": 549.3,
    "cps": 571.9
   },
   "se": {
    "sci": 1.02,
    "read": 1.02,
    "math": 1.28,
    "cps": 1.02
   },
   "ci95": {
    "sci": [
     539.0,
     543.0
    ],
    "read": [
     499.0,
     503.0
    ],
    "math": [
     547.0,
     552.0
    ],
    "cps": [
     570.0,
     574.0
    ]
   },
   "rank_all": {
    "sci": [
     3,
     5
    ],
    "read": [
     3,
     11
    ],
    "math": [
     3,
     4
    ],
    "cps": [
     1,
     1
    ]
   },
   "rank_oecd": {
    "sci": null,
    "read": null,
    "math": null,
    "cps": null
   },
   "oecd": false,
   "pct_sci": {
    "p10": 423.1,
    "p25": 484.6,
    "p50": 545.8,
    "p75": 603.1,
    "p90": 649.8
   },
   "gap_sci": 226.7,
   "levels_sci": {
    "below_1b": 0.1,
    "l1b": 1.4,
    "l1a": 6.4,
    "l2": 16.9,
    "l3": 31.0,
    "l4": 29.7,
    "l5": 12.8,
    "l6": 1.6
   },
   "low": {
    "sci": 7.9
   },
   "top": {
    "sci": 14.5
   },
   "change_2022_2025": {
    "sci": {
     "delta": -2.3,
     "sig": false
    },
    "read": {
     "delta": -9.4,
     "sig": true
    },
    "math": {
     "delta": -2.6,
     "sig": false
    }
   },
   "trend_10y": {
    "sci": {
     "delta10y": 10.4,
     "sig": true
    },
    "read": {
     "delta10y": -11.7,
     "sig": true
    },
    "math": {
     "delta10y": 2.8,
     "sig": false
    }
   },
   "rank_range_sci": {
    "2022": [
     2,
     4
    ],
    "2025": [
     2,
     4
    ]
   }
  },
  "Chinese Taipei": {
   "name": "Chinese Taipei",
   "flag_sampling": false,
   "mean": {
    "sci": 539.7,
    "read": 507.8,
    "math": 546.2,
    "cps": 550.9
   },
   "se": {
    "sci": 3.06,
    "read": 3.06,
    "math": 3.06,
    "cps": 2.55
   },
   "ci95": {
    "sci": [
     534.0,
     546.0
    ],
    "read": [
     502.0,
     514.0
    ],
    "math": [
     540.0,
     552.0
    ],
    "cps": [
     546.0,
     556.0
    ]
   },
   "rank_all": {
    "sci": [
     3,
     5
    ],
    "read": [
     3,
     10
    ],
    "math": [
     3,
     4
    ],
    "cps": [
     4,
     6
    ]
   },
   "rank_oecd": {
    "sci": null,
    "read": null,
    "math": null,
    "cps": null
   },
   "oecd": false,
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    "p10": 390.7,
    "p25": 467.7,
    "p50": 548.2,
    "p75": 618.2,
    "p90": 672.0
   },
   "gap_sci": 281.4,
   "levels_sci": {
    "below_1b": 0.5,
    "l1b": 3.2,
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    "l2": 16.4,
    "l3": 24.5,
    "l4": 26.1,
    "l5": 15.7,
    "l6": 4.5
   },
   "low": {
    "sci": 12.9
   },
   "top": {
    "sci": 20.1
   },
   "change_2022_2025": {
    "sci": {
     "delta": 2.3,
     "sig": false
    },
    "read": {
     "delta": -7.4,
     "sig": false
    },
    "math": {
     "delta": -0.9,
     "sig": false
    }
   },
   "trend_10y": {
    "sci": {
     "delta10y": 13.8,
     "sig": true
    },
    "read": {
     "delta10y": 13.5,
     "sig": true
    },
    "math": {
     "delta10y": 8.8,
     "sig": false
    }
   },
   "rank_range_sci": {
    "2022": [
     2,
     5
    ],
    "2025": [
     2,
     5
    ]
   }
  },
  "Japan": {
   "name": "Japan",
   "flag_sampling": false,
   "mean": {
    "sci": 537.6,
    "read": 502.7,
    "math": 525.4,
    "cps": 557.3
   },
   "se": {
    "sci": 3.83,
    "read": 3.83,
    "math": 4.34,
    "cps": 3.32
   },
   "ci95": {
    "sci": [
     530.0,
     545.0
    ],
    "read": [
     495.0,
     510.0
    ],
    "math": [
     517.0,
     534.0
    ],
    "cps": [
     551.0,
     564.0
    ]
   },
   "rank_all": {
    "sci": [
     3,
     7
    ],
    "read": [
     3,
     12
    ],
    "math": [
     5,
     7
    ],
    "cps": [
     2,
     5
    ]
   },
   "rank_oecd": {
    "sci": [
     1,
     3
    ],
    "read": [
     1,
     8
    ],
    "math": [
     1,
     2
    ],
    "cps": [
     1,
     1
    ]
   },
   "oecd": true,
   "pct_sci": {
    "p10": 401.0,
    "p25": 470.7,
    "p50": 544.3,
    "p75": 608.5,
    "p90": 661.4
   },
   "gap_sci": 260.4,
   "levels_sci": {
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    "l1b": 2.6,
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    "l2": 17.4,
    "l3": 27.2,
    "l4": 26.9,
    "l5": 13.9,
    "l6": 3.2
   },
   "low": {
    "sci": 11.3
   },
   "top": {
    "sci": 17.2
   },
   "change_2022_2025": {
    "sci": {
     "delta": -9.0,
     "sig": false
    },
    "read": {
     "delta": -13.1,
     "sig": true
    },
    "math": {
     "delta": -10.2,
     "sig": false
    }
   },
   "trend_10y": {
    "sci": {
     "delta10y": 5.3,
     "sig": false
    },
    "read": {
     "delta10y": -7.3,
     "sig": false
    },
    "math": {
     "delta10y": -3.1,
     "sig": false
    }
   },
   "rank_range_sci": {
    "2022": [
     2,
     4
    ],
    "2025": [
     2,
     6
    ]
   }
  },
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   "name": "Estonia",
   "flag_sampling": false,
   "mean": {
    "sci": 527.1,
    "read": 499.2,
    "math": 507.9,
    "cps": 540.7
   },
   "se": {
    "sci": 2.3,
    "read": 2.55,
    "math": 2.3,
    "cps": 1.79
   },
   "ci95": {
    "sci": [
     523.0,
     532.0
    ],
    "read": [
     494.0,
     504.0
    ],
    "math": [
     503.0,
     512.0
    ],
    "cps": [
     537.0,
     544.0
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   },
   "rank_all": {
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     5,
     7
    ],
    "read": [
     3,
     13
    ],
    "math": [
     8,
     9
    ],
    "cps": [
     6,
     8
    ]
   },
   "rank_oecd": {
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     1,
     3
    ],
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     1,
     8
    ],
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     3,
     4
    ],
    "cps": [
     2,
     3
    ]
   },
   "oecd": true,
   "pct_sci": {
    "p10": 409.8,
    "p25": 466.4,
    "p50": 529.7,
    "p75": 588.9,
    "p90": 639.5
   },
   "gap_sci": 229.7,
   "levels_sci": {
    "below_1b": 0.1,
    "l1b": 1.4,
    "l1a": 8.4,
    "l2": 21.2,
    "l3": 31.6,
    "l4": 25.9,
    "l5": 9.7,
    "l6": 1.7
   },
   "low": {
    "sci": 9.9
   },
   "top": {
    "sci": 11.3
   },
   "change_2022_2025": {
    "sci": {
     "delta": 1.3,
     "sig": false
    },
    "read": {
     "delta": -11.8,
     "sig": true
    },
    "math": {
     "delta": -2.1,
     "sig": false
    }
   },
   "trend_10y": {
    "sci": {
     "delta10y": -7.6,
     "sig": false
    },
    "read": {
     "delta10y": -21.3,
     "sig": true
    },
    "math": {
     "delta10y": -14.7,
     "sig": true
    }
   },
   "rank_range_sci": {
    "2022": [
     4,
     7
    ],
    "2025": [
     4,
     6
    ]
   }
  },
  "Korea": {
   "name": "Korea",
   "flag_sampling": false,
   "mean": {
    "sci": 526.1,
    "read": 500.6,
    "math": 522.3,
    "cps": 537.7
   },
   "se": {
    "sci": 3.32,
    "read": 3.32,
    "math": 3.83,
    "cps": 2.81
   },
   "ci95": {
    "sci": [
     520.0,
     533.0
    ],
    "read": [
     494.0,
     507.0
    ],
    "math": [
     515.0,
     530.0
    ],
    "cps": [
     532.0,
     543.0
    ]
   },
   "rank_all": {
    "sci": [
     5,
     7
    ],
    "read": [
     3,
     13
    ],
    "math": [
     5,
     7
    ],
    "cps": [
     6,
     10
    ]
   },
   "rank_oecd": {
    "sci": [
     1,
     3
    ],
    "read": [
     1,
     9
    ],
    "math": [
     1,
     2
    ],
    "cps": [
     2,
     5
    ]
   },
   "oecd": true,
   "pct_sci": {
    "p10": 384.1,
    "p25": 458.5,
    "p50": 534.2,
    "p75": 599.2,
    "p90": 653.8
   },
   "gap_sci": 269.7,
   "levels_sci": {
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    "l1b": 3.5,
    "l1a": 9.9,
    "l2": 18.2,
    "l3": 27.3,
    "l4": 25.6,
    "l5": 11.8,
    "l6": 2.8
   },
   "low": {
    "sci": 14.2
   },
   "top": {
    "sci": 14.7
   },
   "change_2022_2025": {
    "sci": {
     "delta": -1.7,
     "sig": false
    },
    "read": {
     "delta": -14.9,
     "sig": true
    },
    "math": {
     "delta": -5.0,
     "sig": false
    }
   },
   "trend_10y": {
    "sci": {
     "delta10y": 11.9,
     "sig": true
    },
    "read": {
     "delta10y": -14.1,
     "sig": true
    },
    "math": {
     "delta10y": -1.1,
     "sig": false
    }
   },
   "rank_range_sci": {
    "2022": [
     4,
     7
    ],
    "2025": [
     4,
     6
    ]
   }
  },
  "United Kingdom": {
   "name": "United Kingdom",
   "flag_sampling": false,
   "mean": {
    "sci": 511.4,
    "read": 494.2,
    "math": 487.6,
    "cps": 522.6
   },
   "se": {
    "sci": 2.04,
    "read": 2.04,
    "math": 2.3,
    "cps": 1.79
   },
   "ci95": {
    "sci": [
     507.0,
     515.0
    ],
    "read": [
     490.0,
     498.0
    ],
    "math": [
     483.0,
     492.0
    ],
    "cps": [
     519.0,
     526.0
    ]
   },
   "rank_all": {
    "sci": [
     8,
     14
    ],
    "read": [
     4,
     13
    ],
    "math": [
     10,
     18
    ],
    "cps": [
     11,
     15
    ]
   },
   "rank_oecd": {
    "sci": [
     4,
     9
    ],
    "read": [
     1,
     9
    ],
    "math": [
     5,
     11
    ],
    "cps": [
     6,
     10
    ]
   },
   "oecd": true,
   "pct_sci": {
    "p10": 373.8,
    "p25": 437.9,
    "p50": 512.1,
    "p75": 585.4,
    "p90": 646.5
   },
   "gap_sci": 272.7,
   "levels_sci": {
    "below_1b": 0.4,
    "l1b": 4.0,
    "l1a": 13.0,
    "l2": 22.7,
    "l3": 26.3,
    "l4": 21.0,
    "l5": 10.0,
    "l6": 2.5
   },
   "low": {
    "sci": 17.4
   },
   "top": {
    "sci": 12.6
   },
   "change_2022_2025": {
    "sci": {
     "delta": 11.7,
     "sig": true
    },
    "read": {
     "delta": -0.2,
     "sig": false
    },
    "math": {
     "delta": -1.4,
     "sig": false
    }
   },
   "trend_10y": {
    "sci": {
     "delta10y": 0.1,
     "sig": false
    },
    "read": {
     "delta10y": -6.5,
     "sig": false
    },
    "math": {
     "delta10y": -8.6,
     "sig": true
    }
   },
   "rank_range_sci": {
    "2022": [
     10,
     25
    ],
    "2025": [
     7,
     12
    ]
   }
  },
  "Canada": {
   "name": "Canada",
   "flag_sampling": true,
   "mean": {
    "sci": 510.1,
    "read": 489.8,
    "math": 485.3,
    "cps": 524.9
   },
   "se": {
    "sci": 1.79,
    "read": 1.79,
    "math": 1.79,
    "cps": 1.53
   },
   "ci95": {
    "sci": [
     507.0,
     514.0
    ],
    "read": [
     486.0,
     493.0
    ],
    "math": [
     482.0,
     489.0
    ],
    "cps": [
     522.0,
     528.0
    ]
   },
   "rank_all": {
    "sci": [
     8,
     14
    ],
    "read": [
     6,
     15
    ],
    "math": [
     10,
     19
    ],
    "cps": [
     9,
     15
    ]
   },
   "rank_oecd": {
    "sci": [
     4,
     10
    ],
    "read": [
     4,
     10
    ],
    "math": [
     5,
     14
    ],
    "cps": [
     5,
     9
    ]
   },
   "oecd": true,
   "pct_sci": {
    "p10": 378.6,
    "p25": 442.1,
    "p50": 512.5,
    "p75": 580.0,
    "p90": 636.3
   },
   "gap_sci": 257.6,
   "levels_sci": {
    "below_1b": 0.4,
    "l1b": 3.6,
    "l1a": 12.3,
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 }
}