No Child Left Behind requires that students' standardized test results be broken down by demographic information, such as economic status, ethnicity, and English-language abilities. Which example demonstrates the benefits of this practice? A There has been an influx of refugees from Syria and from Nigeria coming to Evantown, so Evantown High has hired additional English as a second language teachers.

B While achievement overall in the Jameson County School District was quite good, analysis revealed, to district educators' surprise, that there is a significant performance gap with low-income boys.

C Students in Cityville District perform very well in fourth grade on reading, but their scores drop by eighth grade.

D Marcell County teachers have been in discussion with their school board about the benefits to teenagers of starting high school later, and they have successfully lobbied their case for a later start next school year.