"ragged school" meaning in English

{
  "etymology_text": "So called because of the ragged clothing of the children.",
  "forms": [
    {
      "form": "ragged schools",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ragged school (plural ragged schools)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A free school for poor children, where they were taught and in part fed."
      ],
      "id": "en-ragged_school-en-noun-6rSh9Lk9",
      "links": [
        [
          "free",
          "free"
        ],
        [
          "school",
          "school"
        ],
        [
          "poor",
          "poor"
        ],
        [
          "child",
          "child"
        ]
      ],
      "raw_glosses": [
        "(UK, historical) A free school for poor children, where they were taught and in part fed."
      ],
      "tags": [
        "UK",
        "historical"
      ]
    }
  ],
  "word": "ragged school"
}

{
  "etymology_text": "So called because of the ragged clothing of the children.",
  "forms": [
    {
      "form": "ragged schools",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ragged school (plural ragged schools)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses"
      ],
      "glosses": [
        "A free school for poor children, where they were taught and in part fed."
      ],
      "links": [
        [
          "free",
          "free"
        ],
        [
          "school",
          "school"
        ],
        [
          "poor",
          "poor"
        ],
        [
          "child",
          "child"
        ]
      ],
      "raw_glosses": [
        "(UK, historical) A free school for poor children, where they were taught and in part fed."
      ],
      "tags": [
        "UK",
        "historical"
      ]
    }
  ],
  "word": "ragged school"
}