Essentially, yes. That's what happened. I left home at 17 when my little sis was 7. As soon as I moved out, my mother left and took my sister with her. So she did not have the same parenting experience at all. My father was a professor of Education. He had me solving quadratic equations at age 10. I worked and got a BS at the same time. My sister was a high school dropout who has never worked a day in her life.