问答题
Home schooling appears to be a great I success for middle-class and wealthy families when one parent is home most of the time.However, home schooling does not work in inner-city neighborhoods because parents either work during the day or actively look for work.Numerous estimates between 1 and 2 million have been made regarding the number of home-schooled children in this country.Home schooling will grow in the future as course materials and tutoring systems vastly improve.
【正确答案】Because most parents are simply not available to provide home schooling.
【答案解析】文章最后一段第一句后半部分提到“但它不能取代我们的公立学校系统,因为大多数家长根本无法提供家庭教育”。由此可知本题答案。