Grade Scales - Currently, only integers can be specified as letter grade boundaries when creating a grade scale. Provide the ability to specify a real number.

When creating a grading scale, the letter grade boundary is chosen from a drop-down list box and only an integer can be chosen. For example. I chose 89% as the letter grade boundary for an A-. As a result, any grade over 89, example 89.1 displays as an A-. I want only an 89.5 or higher to display as an A-. I am requesting a way to specify any number as a letter grade boundary in addtion to the integer choices currently in the drop-down list box, example 89.49% as the letter grade boundary for A-. Perhaps a "combo-box" instead of a "drop-down list box" in the interface would work.