Which of the following are examples of traditional gangs most often found in schools?

The correct choice identifies Crips, Bloods, and Folk Nation as traditional gangs that are commonly found in schools. These gangs have a significant presence in many urban areas and are known for their involvement in various types of criminal activities, including drug trafficking, violence, and other organized crime. Their notoriety and recruitment strategies often extend into the youth demographic, leading to their presence in school environments where they may seek to increase their membership or influence among students.

In contrast, the other options consist of groups or organizations that do not fit the traditional gang profile. Hispanic Rebels and Asian Invaders may sound like gang names, but they do not hold the same level of recognition or urban influence as the gangs listed in the correct answer. The Black Panther Party, while historically significant, was a political organization focused on civil rights and social justice rather than traditional gang activities. Lastly, motorcycle clubs and environmental groups represent forms of organized communities but typically do not encompass the gang dynamics characterized by violence or criminality commonly associated with the gangs named in the correct choice.

Thus, B stands out as the relevant choice that accurately represents gangs found in a school context, emphasizing the nature and impact of these groups on students and education systems.