Gradebook allows you to set grading standards by wpm and accuracy that are automatically applied to various reports and report cards. It's defaulted to an A through F grading scale, but is completely customizable.
A Teacher can set this per class by going into the class then the Gradebook tab.
School Admins can set this for all classes of a particular grade in the school by going to School Setup>Gradebook.
District Admins can set this for all classes of a particular grade in the entire district by going to District Settings>Gradebook.