The document summarizes a study on diversity and differentiated instruction in the American education system. The study involved 28 participants, including 6 preservice teachers who were interviewed. Participants learned about ethnography and conducted observations in schools and communities to understand different cultures. Through discussions and reflection papers, participants examined their own cultural beliefs and how their views shifted as they became more informed about other cultures. The study found that teachers who were more informed about cultures were better able to develop diverse teaching styles.