这套读本的英文原版共分七级，包括启蒙读本和第1-6级。考虑到启蒙读本与一级篇幅都较少，难易程度也很接近，于是我们将之合并为第1册，其余2-6级与英文原版相同。这样国内出版的这套读本共包括6册。第1册从字母表开始，主要侧重于字母的发音与书写、简单的单词与句型，同时强调英文书写，课文后面附有不少书法练习，让孩子们不仅将英语说得像外国人，而且写得也跟外文书法一样，这是国内英语教学所缺少的一个环节。从第2册开始，均是比较正式的课文了，每一课包括词汇和课文，对一些生词有英文解释，让学生学会通过简单英文理解生词，养成用英语理解和思维的习惯。第4册还附有课后思考练习，这些练习可以帮助学生更好理解文章，引发孩子们的思考。第5册和第6册的课文前增加了作者简介与相关背景知识，内容丰富而有一定深度。
　　从所选课文的英文难易程度来看，大致而言，这套读本的第1-3册跟国内小学毕业程度相近，第4册则适用于初中生阅读使用，第5、6册可供高中及以上程度学习者阅读。从文体方面我们可以看出，除了常见的记叙、散文体以外，这套读本对诗歌、戏剧、论说文等文体也很重视，书中选取了不少名家的名作名篇。这对国内孩子们真正感受英语这一西方语言的魄力是大有帮助的。

　　This series of schoolbooks teaching reading and moral precepts, originally prepared by William Holmes who was a professor at Miami University McGuffey, had a profound influence on public education in the United States. The eclectic readers, meaning that the selections were chosen from a number of sources, were considered remarkably literary works and probably exerted a greater influence upon literary tastes in the United States more than any other book, excluding the Bible.
　　It is estimated that at least 120 million copies of McGuffey's Readers were sold between 1836 and 1960, placing its sales in a category with the Bible and Webster's Dictionary. Since 1961 they have continued to sell at a rate of some 30,000 copies a year. No other textbook bearing a single person's name has come close to that mark. McGuffey's Readers are still in use today in some school systems, and by parents for home schooling purposes.