Why did international test comparisons raise concerns about the U.S. STEM workforce?

International test comparisons, such as the Trends in International Mathematics and Science Study (TIMSS) and the Programme for International Student Assessment (PISA), raised significant concerns regarding the U.S. STEM workforce because they revealed that U.S. students were not achieving in STEM disciplines at the same rate as their international peers.1

Specifically, these assessments highlighted a comparatively large proportion of underperforming students in the United States. For instance, PISA 2006 results placed the country 21st out of 30 nations in scientific competency and knowledge. These findings fueled fears that the United States would struggle to compete in the global economy, as the nation's prosperity is heavily dependent on a well-educated, innovative workforce capable of addressing complex societal problems.12

Ultimately, these international rankings served as a catalyst for U.S. policymakers to scrutinize educational practices, leading to bipartisan efforts to better align K-12 standards with the demands of the modern, knowledge-based economy and to improve the quality of the STEM teaching force.1