It would be nice to have both sort and filter options in the grade book.  Our school has an option for community service during the 4th quarter for seniors.  Should a senior be eligible and decide to participate in the service program he would not be present in class. It would be beneficial for a teacher to be able to sort such those students would appear at the bottom of the list or be filtered from view making grading easier.  

A feature to be able to resort the order of the students in any order would be helpful (Create a sort order column for each childin the display settings).  Our need: Elementary teachers assign numbers 1-25 to students to assist in organizing turned in classwork and homework assignments, so that it matches the gradebook order.  The problem arises if a new student enrolls later in the year, then all the numbers must be reassigned to accommodate the alphabetical order of the gradebook.