Are you a high potential?

As you'd be aware, we in NI have adopted 9-box-criteria that rates every employee on a grid of performance and potential. Most of us normally understand what is meant by performance, however, we'd need some objective way to determine the potential exhibited. I've always referred to this Harvard Business Review article Are You a High Potential? to both understand and articulate. Further, we also have adopted a set of 10 questions from a Harvard Business Study to assess the potential.