CHC materials have been designed specifically to save preparation time for the teacher, and facilitate presentation. Homeschooling is not the same as classroom schooling. CHC workbooks are not identical to classroom texts geared to teach a large group of children at varying levels of ability.
Rather, CHC materials are designed for a one-on-one approach that, after a brief presentation of the lesson, allows the student to work far more independently than do most standard texts. This presentation not only allows the student to work independently, but also frees the teacher to give attention to other students or tasks.
Yet, one might note that CHC materials uphold solid academic standards as well. For example, parents have reported that their students, upon completion of CHC's spelling series, were two years ahead of their grade level in spelling.