WHY do we collaboratively validate performance assessments?

Validations really serve two purposes: to norm around quality and to initiate revisions.

Developing a Shared Vision

High-quality performance assessments are validated ensure that they have technical quality.  In Colorado, we use the Design Elements to help define what "quality" looks like.  As with most things, taking a definition of what a quality performance assessment looks like and transitioning to a clear vision of what it really looks like in practice can be a complex process.  Developing the latter can take time, especially when we are looking to norm that vision across a wide range of individuals.  In this way, going through validation protocols allows us to create a shared understanding of what a performance assessment looks and feels like when the Design Elements are deeply engrained in the design.  If the task that is shared does not necessarily align to the group's vision for quality, feedback is given to help guide needed revisions.  

Revisions

The second goal of a validation session is to provide direct feedback to the designer.  Having early input from a larger group allows the designer of the task to move toward an improved version more quickly.