Project Follow Thorugh was developed by Zig in the 1960's and was aimed at schools and students who were labeled to be "failing". A failing school was one where the majority of its students were not meeting academic standards. THese were often poor schools in poor districts. These schools were also referred to as Title 1 schools. Project Follow Through was a program the brought Direct Instruction to the school as a whole, where it was implemented in every classroom. Zig and his team would tain all of the teachers on all necessary components of Cirect Instruction. If implemented properly, these schools made tremendous progress.
The following video gives a little background on Direct Instruction
In his 2007 book, Teaching Needy Kids in Our Backward System: 42 Years of Trying, Engelmann describes what it is like to watch a teacher who is "excellent" when teaching Direct Instruction,
"They make it look easy, but you know that it isn't. In fact, the more you know about how to doi t, the more you appreciate the skill of the expert. The star teacher in the early grades controld details of her instruction in a show she puts on every school day - not simply during the small-group instruction but from the moment the children enter the classroom. Everything is engineered to be productive" (p. 149-150).
This instructable will outline key components of Direct Instruction, and, what you need to do to be an "excellent teacher".