The marketing plan template saves you the development cost of trying to develop a marketing strategy by trial and error. The template gives you the steps that someone has successfully used to create income online.
A good plan template is also great for keeping parents informed about their kids' activities as well. While this doesn't apply so much for college courses, it's deeply important for preschool through middle school at the very least. Not only does this give parents a way to know what their children are learning about, but it also gives them a chance to participate as well, such as acting as a field trip chaperon or an assistant for a class event. In the unlikely event that a parent objects with the subject the student is learning, the parent will be able to learn this right away rather than in the middle of the semester.