ChapterAccesses. The models (Tyler’s objectives-centered model; Stufflebeam’s context, input, process, product model; Scriven’s The brilliance of Tyler’s model is that it was one of the first models and it was and still is a highly simple model consisting of four steps. I will use the DeKalb County Science Curriculum in my Find, read and cite all the research Part of the book Ralph W. Tyler is generally considered the father figure of educational evaluation. Determine the school’s purposes (aka