The document discusses the importance of having positive expectations for students and how expectations can influence student achievement and outcomes. It notes that positive expectations, where the teacher believes every student can learn and achieve, tend to become self-fulfilling prophecies where what is expected is what occurs. In contrast, negative expectations that some students cannot learn or that teaching will be unsuccessful often lead to poor student outcomes that confirm the low expectations. The key message is that a teacher's attitude and expectations, whether positive or negative, can significantly impact students.