短文改错（共10小题；每小题1分，满分10分）
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
Rowena and Billy Wrangler are model high school students and do extreme well in achievement tests. And next year, Rowena will attend Harvard University. Billy, her younger brother, hope to go to Cornell. That makes Rowena and Billy different from most students are that they don’t go to school . In fact, they've never been school . Since a kindergarten, they have studied at home. Neither Rowena or Billy feels as if they have missed out on nothing by being taught at home. As many of the more than one million people who receive home schooling in the United States, they feel that we have gotten a good education.