Eye for Editing: Levels of Edit

I’m stating the obvious when I say that there are many systems that define levels of edit. Some systems define up to nine levels or categories of edit, such as the well-known, pioneering effort to define levels of edit by NASA’s Jet Propulsion Laboratory. But when I started in my current role as editor for a team of K–12 curriculum writers, I implemented a personally derived system of four levels, which are based on the book Technical Editing, The Practical Guide for Editors and Writers, by Judith A. Tarutz (1992). This is also the system I’ve used when proposing and scoping freelance editing projects. My system includes the following levels of edit: Developmental, Substantive, Literary, and Pre-release. Except for Developmental, these levels build on each other, starting with Pre-release at the lowest level.