This document discusses the importance of understanding diversity and reflecting on one's own cultural identity and preconceptions as a teacher. It notes that the student population is becoming more diverse, so teachers must look within themselves to assess how they relate to different cultures and not assume there is no diversity. Teachers are encouraged to identify their own cultural factors and recognize how others may see them in order to confront any biases. The goal is for teachers to truly leave no child behind by welcoming and understanding all students.