A New PRS Gradebook can be populated with student names from the Roster associated with the Class for which this Gradebook is being created, or the student names can come from an external file. Click on the File Name radio button and click on the Choose File button. Navigate to the location of the file containing the names of the students that will be used for this Gradebook. The file must be in a .csv format. When a Gradebook is created from an external .csv file, the Update from Roster Function Button will change to Update from File.