The grade schema takes the points scored on an item or in a calculation and compares it to the item's total points possible to derive a percentage. This percentage is mapped to a range of scores and displays a grade, such as a letter.
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Best Practice
Blackboard does not round when applying a Grade Schema, so if the cut off for an A- is 90%, 89.99% would be considered a B+. To apply rounding, you can either override the overall grade calculation or modify your grade schema to have different cut-off values. For example, you could make the lowest value for an A- equal to 89.5% to allow for a rounding grades to the nearest whole number.