We ourselves don't know any different. We went to school. School is what we know. We know how to sit at our desk, whilst the teacher provides the information they tell us is needed. We know if the teacher doesn't tell us that we will be tested on something, then we don't need to bother ourselves learning it. We know that the student knows nothing important and the teacher knows everything.
So that's what many of us, when we start teaching our own children at home do.....we do home-school.
We stand at the front of our children and dictate the ABC's and 123's, whilst they protest at our teaching attempts, because they don't want to copy out sentences or write about what the Victorians used to wear!
Later when they are in bed we sob ourselves to sleep, in a panic, questioning, whats wrong with my child and why he is not wanting to learn. If he was at school he would have to sit there all day doing as he is told...