text: Many homes that house one or more students are normally very busy place. Take an average middle class family, around two parents and three children. At least one parent has work, so they are away for they majority of the day. The other parent must now be the one to shuttle the students to doctors appointments, and cannot leave them home. The parent would have to decide between taking their children to everywhere the parent goes, and distracting the children from education, or leaving them home alone. Either the students would not be able to focus on their work, or the parent would not get anything useful done. Say they had a nanny to watch the children while the parents work. Now the children have to be impossibly restrained to keep themselves from bothering each other. Imagine trying to focus on a physics lecture while trying to stop a young child from coming into your room screaming. Even if the conditions at home are completely perfect, a student needs to somehow remain completely focused. A screen with colors and sounds coming out of it does not hold one responsible as well as an in person teacher. The distractions could range from "just taking a break" to "just getting some fresh air" to "I'm just going to go to the movies". There is no real way the teacher could stop them. Many students lack self-control, or need to be taught it. These students would never learn that they can not just leave because something bores them. All, but especially young students would find focusing extremely difficult when not being held accountable.