"straight A's" meaning in English

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      "expansion": "straight A's pl (plural only)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "text": "He always gets straight A's; he must study a lot.",
          "type": "example"
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      ],
      "glosses": [
        "Grades or marks that are consistently A's."
      ],
      "id": "en-straight_A's-en-noun-NbACLQqI",
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      "raw_glosses": [
        "(education, chiefly US) Grades or marks that are consistently A's."
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        {
          "word": "straight A"
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        "plural",
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      "topics": [
        "education"
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  "word": "straight A's"
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      "expansion": "straight A's pl (plural only)",
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  "lang_code": "en",
  "pos": "noun",
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    {
      "word": "straight A"
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      "examples": [
        {
          "text": "He always gets straight A's; he must study a lot.",
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        "Grades or marks that are consistently A's."
      ],
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        "(education, chiefly US) Grades or marks that are consistently A's."
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      "topics": [
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  "word": "straight A's"
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  "path": [
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  "section": "English",
  "subsection": "noun",
  "title": "straight A's",
  "trace": ""
}