"école préélémentaire" meaning in Français

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Locutions nominales en français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Français",
      "orig": "français",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de école et de préélémentaire."
  ],
  "forms": [
    {
      "form": "écoles préélémentaires",
      "tags": [
        "plural"
      ]
    }
  ],
  "hypernyms": [
    {
      "word": "école primaire"
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en français de l’éducation",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en français",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Français de France",
          "orig": "français de France",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonyme de école maternelle."
      ],
      "id": "fr-école_préélémentaire-fr-noun-CNm6aCuG",
      "raw_tags": [
        "France"
      ],
      "topics": [
        "education"
      ]
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "école préélémentaire"
}

{
  "categories": [
    "Compositions en français",
    "Locutions nominales en français",
    "français"
  ],
  "etymology_texts": [
    "Composé de école et de préélémentaire."
  ],
  "forms": [
    {
      "form": "écoles préélémentaires",
      "tags": [
        "plural"
      ]
    }
  ],
  "hypernyms": [
    {
      "word": "école primaire"
    }
  ],
  "lang": "Français",
  "lang_code": "fr",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Lexique en français de l’éducation",
        "Wiktionnaire:Exemples manquants en français",
        "français de France"
      ],
      "glosses": [
        "Synonyme de école maternelle."
      ],
      "raw_tags": [
        "France"
      ],
      "topics": [
        "education"
      ]
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "école préélémentaire"
}