Testing, Stress, and Performance: How Students Respond Physiologically to High-Stakes Testing
We examine how students' physiological stress differs between a regular school week and a highstakes testing week, and we raise questions about how to interpret high-stakes test scores. A potential contributor to socioeconomic disparities in academic performance is the difference in the level of stress experienced by students outside of school. Chronic stress – due to neighborhood violence, poverty, or family instability – can affect how individuals' bodies respond to stressors in general, including the stress of standardized testing. This, in turn, can affect whether performance on standardized tests is a valid measure of students' actual ability. We collect data on students' stress responses using cortisol samples provided by low-income students in New Orleans. We measure how their cortisol patterns change during high-stakes testing weeks relative to baseline weeks. We find that high-stakes testing is related to cortisol responses, and those responses are related to test performance. Those who responded most strongly – with either increases or decreases in cortisol – scored 0.40 standard deviations lower than expected on the high-stakes exam.