The Schaffer model is a method of guiding the organization of writing. It is an effective way of making sure students include details, elaboration, and organization. It is effective for several modes of writing: description, exposition, analysis, and persuasion. A quick introduction is available here: an introduction to the Schaffer model.
Additionally, it is an effective organizational aid. Students are encouraged to use this planning sheet to help them.
Source: The above description is a paraphrase of materials from Greenville County Schools. Additionally, the introductory Power Point presentation is a modified GCS resource. It is provided here only for GCS students who need additional help or who missed in-class instruction.