I read up on Mike Miles (!!)

He imposed a lock-step, scripted curriculum.

I don't know if you know that I used to teach. It was a private school for adolescent girls who were diagnosed with psychiatric issues. We had books, and a state curriculum. I used the books, and my lessons (social studies, various courses) corresponded to the state curriculum, but I wrote all my own material. I wrote all my own study guides. I had small classes, because these students couldn't operate in a larger class, so I knew each student well and I knew each student's ability. My lessons were tailored for each class, with each student in mind. It was exhausting, but highly successful (I actually had to retire after six years because I was worn out😇). I can't imagine teaching to a scripted curriculum. I wouldn't have done it.