Chapter 7 The evolution of the scoring system for NBPTS assessments

The scoring system for the National Board for Professional Teaching Standards (NBPTS) assessments was a groundbreaking undertaking that brought with it a host of unanticipated challenges. These, in turn, generated a complete revision of the approach to scoring and the design underwent a number of changes during the first decade. Beginning with an analytical model which was so ambitious that it was entirely too cumbersome and complex to be undertaken within a reasonable timeframe, assessment developers had to systematically redesign a scoring system that would be at once reliable, valid, and operationally feasible.