The primary educator of students in their parents, the role of educators is secondary. Therefore, we could do the best job at educating in schools but it could be futile if what is being taught at home is counterproductive to what is being taught in school.
I moved up north to start my teaching career and just before school started I was doing my shopping at Woolies. I noticed a young child chucking a tantrum and his mother seemed to lack the skills to control him in any way. She said "Just wait till you start school, they're gonna teach you some respect."
Unfortunately this attitude that the school will fix everything is becoming more and more common.