Direct Instruction (DI) is an instructional method that is focused on systematic curriculum design and skilful implementation of a prescribed behavioral script - wikpedia 
On the premise that all students can learn and all teachers successfully teach if given effective training in specific techniques, teachers may be evaluated based on measurable student learning. A frequent statement in discussions of the methodology is "If the student doesn't learn, the teacher hasn't taught." (Tarver, 1999)
Direct Instruction was originally developed in the 1960s by Siegfried Engelmann and the late Wesley C. Becker of the University of Oregon, and it was the subject of an extensive federally funded research and implementation program called Project Follow Through - wikipedia
It is sometimes used in resource room programs in schools.
VIMEO 44821702 Educational Maverick Siegfried "Zig" Engelmann has been developing and refining an instructional approach, Direct Instruction, for over 40 years. In this two part film, Zig's life work in changing the lives of students all over the world is captured.
VIMEO 44822238 Educational Maverick Siegfried "Zig" Engelmann has been developing and refining an instructional approach, Direct Instruction, for over 40 years. In this two part film, Zig's life work in changing the lives of students all over the world is captured.
# Critiques
Some critics of DI see it as a betrayal of the humanistic, egalitarian foundations of public education, or as a "canned" or "teacher proof" curriculum deliverable via unskilled teachers. DI has been criticized for being so inflexible that it "handcuffs" teachers.