Susan Brookhart describes a range of strategies for giving effective feedback, including strategies for feedback to students about their writing (Chapter 3). This book approaches the topic from a hands-on, classroom approach. WriterKey faciliatates the approach she describes and seeks to help teachers be more effective and efficient implementing her strategies.
You can learn more about this book by visiting ASCD at this link.
Lorna Earle's thinking about assessment challenges us to do better with what we already do. She argues that as we more carefully and purposefully create assessments, we transform the assessment model into one of exploration and definition. Particularly applicable to WriterKey, chapter 3 of her book defines and examines the differences among assessment of learning, assessment for learning, and assessment as learning. For educators seeking to redefine how they implement their curriculum, define meaningful learning targets, and create instructional goals this book is a great resource.
You can read portions of this book HERE