Final answer:
The question seems to conflate separate historical events; the integration of Woolworth's lunch counter by the Greensboro Four in 1960 did not directly result in riots, but it was a significant nonviolent protest during the Civil Rights Movement that catalyzed other actions. While there were no riots specifically linked to this event, the era was marked by violence in response to the general integration of schools and the civil rights struggle.
Step-by-step explanation:
Riots associated with the integration of schools didn't specifically occur in 1960 when four black students, known as the Greensboro Four, attended a "white school." However, the Greensboro sit-ins that these students initiated at a segregated Woolworth's lunch counter in Greensboro, North Carolina, on February 1, 1960, were part of a larger series of nonviolent protests against racial segregation that sometimes led to local tensions and outbreaks of violence across the South during this era.
They chose Woolworth's to sit-in because it was a national chain and likely to draw attention. Their protest sparked similar sit-ins and protests across the country, which marked the student phase of the civil rights movement. Meanwhile, the violent reactions to the integration of schools and other forms of racial protest were frequent, and cities across the United States, particularly in the South such as Mississippi, Alabama, and Georgia, saw significant violence in the years following the Brown v. Board of Education decision, which declared segregation in public schools unconstitutional.