When the teacher stated the fact that only one of the students would be present with passing grade, she passed a self-fulfilling prophecy.
The teachers are experienced personnel who knows the working system of the organization in which they are employed. If a teacher lets the class know a fact on the very first day, it means that she is confident about what would happen in the semester exams.
So, to ensure that students know about each other well, she askes them to look aside so that all the students are aware of their classmates. Self-fulfilling prophecies occur when our own expectations influence the actions which affect the society.
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