高中学籍号可以通过学信网查询，具体流程如下：
1、先在百度中搜索学信网的网页。
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2、然后用自己的身份证注册自己的学信网账号。
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3、注册网之后登陆学信网。
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4、进入学信网首页后，点击学信档案。
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5、进入学信档案后，点击上面的学籍信息，即可查询自己的高中学籍号。
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