NBER ㅣ 2019.02.12
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 does affect cortisol responses, and those responses have consequences for test performance. Those who responded most strongly ？ with either a large increase or large decrease in cortisol ？ scored 0.40 standard deviations lower than expected on the on the high-stakes exam.