My experience is the same. I think it can possibly work but most who do it are not competent enough to do it. Likely those that are are likely to competent to have the time. Even if you are you realize you need several people like yourself with similar aged kids to cover various basis which at that point is called a school. At some point to the subjects get advanced enough that its going to be increasingly hard for a single parent to cover them. I can say I sub for high school and there is a reason teachers a subjective specific at that point. Its one thing to do various curriculums for various classes in the same subject but keeping up with half a dozen completely different curriculums. You end up leaning on the preset things that basically the people are trying to avoid with public school but now your kid is losing different perspectives, the social aspects, and the challenges of having to figure things out for themselves. Add to this that very early education benefits massively from socialization and is more about that. So like pres school. kindergarten. you need other kids. maybe you can do 1-3 and utilize the public school things. like bring your kid over for recess or clubs and sports if they have them (this is a big reason most peoples home schooling falls flat you sorta need this stuff). maybe you can do 4 or 5 but even junior high they need to start making decisions for subjects and learning to learn from strangers and likley one adult is not going to cut it. Honestly they would be better off putting the effort to working with their kid after school.