Final answer:
The student's detailed description helps understand why schools were desegregated during the 1960s.
Step-by-step explanation:
The student's detailed description of the photograph contributes to a better understanding of the time period by helping the reader understand why schools were desegregated during the 1960s. The description highlights the significance of desegregation as one of the most important goals of the Civil Rights Movement of the 1950s and '60s. It also portrays the powerful impact of the Brown vs. Board of Education decision, which overturned state laws allowing separate but equal schools. The image of the two girls sitting together represents the progress made in breaking down the racial barriers that existed in schools at that time.