Currently, the only way to leave a grade on a student's record (such as from prior to a make-up course) and not have it bring their GPA down is to enter it as a transfer grade, which has this exact 'GPA: Do Not Include' option. The only other current option to exclude a course from a GPA is within the GPA Calculation itself, and that would exclude it from all students. Neither is ideal, and we would like an option to do this for normal courses on an individual student record.