如果你的网站是写一些教程类的文章，那么，添加一个文章难度等级，让读者大致知道文章的操作难度是不错的选择。安装 Article Difficulty Level 插件就可以实现该功能，在发布文章 时候，可以选择 5 个等级：
然后在前台会显示星星等级，可以设置显示在文章开头或结尾，允许修改“Article Difficulty Level”为其他文字：
在后台插件安装界面搜索 Article Difficulty Level 即可在线安装，或者下载 Article Difficulty Level
来源：
https://www.wpdaxue.com/article-difficulty-level.html
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