As concerned parents, we are totally qualified to teach our children. No one knows your child like you do.
I have a double major in education and I taught both private Christian school and public school before I had my children. I know a lot of people will disagree with me, but having an education degree was more of a hindrance than a help in teaching my own children.
First of all, I tried to bring school home. You do not want to do that. This is private tutoring, not classroom management. You and your children have a great opportunity to explore and investigate all kinds of things. What areas of interest do your children have? What do they want to learn about?
Your job is not to teach them everything there is to learn. Your job is to teach them how to learn, how to study, how to investigate and help them develop the love of learning.
There is no greater job on earth. Is it hard? Sometimes. Is it worth it? You betcha!