The law is implicit in the economic idea of rational expectations. While it originated in the context of market responses, the law has profound implications for the selection of high-level targets in organizations.[4] Jón Danı́elsson quotes the law as “Any statistical relationship will break down when used for policy purposes”, and suggests a corollary to the law for use in financial risk modelling: “A risk model breaks down when used for regulatory purposes.”

Source: Goodhart’s law – Wikipedia

With the push toward using standardized testing scores, this economic policy could have ramifications on the validity of said test scores.