"platoon grouping" meaning in English

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      "expansion": "platoon grouping (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Education",
          "orig": "en:Education",
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            "Society",
            "All topics",
            "Fundamental"
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          "source": "w"
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      ],
      "glosses": [
        "A system of children's education in which one group studied while another group carried out activities."
      ],
      "id": "en-platoon_grouping-en-noun-AqoMpZoh",
      "links": [
        [
          "education",
          "education"
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      "raw_glosses": [
        "(education, historical) A system of children's education in which one group studied while another group carried out activities."
      ],
      "tags": [
        "historical",
        "uncountable"
      ],
      "topics": [
        "education"
      ]
    }
  ],
  "word": "platoon grouping"
}

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      "expansion": "platoon grouping (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "English entries with incorrect language header",
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        "en:Education"
      ],
      "glosses": [
        "A system of children's education in which one group studied while another group carried out activities."
      ],
      "links": [
        [
          "education",
          "education"
        ]
      ],
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        "(education, historical) A system of children's education in which one group studied while another group carried out activities."
      ],
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        "historical",
        "uncountable"
      ],
      "topics": [
        "education"
      ]
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  "word": "platoon grouping"
}