In practice, vertical scales have been continually used to measure students' achievement progress across several grade levels and have been considered very challenging psychometric procedures. Recently, such practices have been drawing many criticisms. The major criticisms focus on dimensionality and construct equivalence of the latent trait or…

To refocus its professional development plan, Chaska Middle School East (Minnesota) looked at where student achievement was lagging. Using the Killion back-mapping model, a student-focused, data-driven, multi-step process by which teachers gather and study student data to determine where professional growth, development, or training is most…