Which concept refers to the persistent difference in grades, test scores, and graduation rates that exist among students of different ethnicities, races, and sexes? achievement gap bell curve attrition racism?

The correct answer is: "Achievement Gap".

The term refers to the significant disparity in academic performance that exists between different groups of students. These groups could be segmented according to diverse criteria like ethnicity, income, gender, etc.

Examples of achievement gaps:

Male students vs female students High-income students vs low-income students Local students vs foreign students