Home schooling can be challenging. But it can work provided the parent(s) has an education background, takes advantage of all the resources available, and collaborates with the local school board. This entails following the local school curriculum and arranging for a qualified teacher, from the local school baord test the child(ren) periodically. In Canada this is important because in order to graduate and get a diploma- a student must have a set number of credits(28) volunteer hours and a second language.(core French).
From my experience with the home schooled children in my area, few have been able to attain that provincial recognized diploma. No doubt this is because GB has hounded parents that education is from Satan, and since Jw are the most educated people on earth they can teach their children far better. (some may remember the talks that reading the awake of six months was the equivalent to a college education.
I also know of a number of witness families have used the society's literature as a curriculum basis. One sister used the Daniel book as a basis for teaching history :(
Another aspect that I have noticed is: ones that have succeed have taken much longer (one to two years more). For example there are 5 homeschooled children in the congregation I loosely attend aged 19-21) All of these children are still picking away at their high school credits, while my children of the same age are in university.