The specific grades required for students to be part of a school's honor roll vary from school to school. Typically, the requirements are for students to earn either all A or B grades.
The school may have a grade point average requirement rather than a letter grade requirement. Typically, an A is worth four points, a B is worth three points, a C is worth two points and a D is worth one point. A failing grade yields no points. Adding the numbers for each class taken and dividing by the number of classes taken will yield the student's grade point average, which helps in calculating honor roll eligibility.