bell curve

This term is primarily used in statistics, psychology, and education to describe a normal distribution. It carries a connotation of predictability and standardization, often implying that extreme outliers are rare while the majority of a population falls into a predictable middle ground.

In academic contexts, the term is frequently associated with "grading on a curve," which can carry a negative emotional tone for students. This suggests a competitive environment where a student's success is dependent on the relative performance of their peers rather than an absolute standard of mastery.