       @grid.onSort.subscribe (event, data) =>
         if data.sortCol.field == "display_name" ||
            data.sortCol.field == "secondary_identifier" ||
+           data.sortCol.field == "sis_id" || # SFU MOD - CANVAS-188 Make SIS ID sortable
            data.sortCol.field.match /^custom_col/
           sortProp = if data.sortCol.field == "display_name"
             "sortable_name"

          student.computed_current_score ||= 0
          student.computed_final_score ||= 0
          student.secondary_identifier = student.sis_login_id || student.login_id

          if @sections_enabled
            mySections = (@sections[sectionId].name for sectionId in student.sections when @sections[sectionId])

        resizable: true
        sortable: true
        formatter: @htmlContentFormatter
      # SFU MOD CANVAS-188 Add SIS ID column
      ,
        id: 'sis_id'
        name: I18n.t 'sis_id', 'SIS ID'
        field: 'sis_id'
        width: 100
        cssClass: "meta-cell secondary_identifier_cell"
        resizable: true
        sortable: true
        formatter: @htmlContentFormatter
      # END SFU MOD
      ]

      @allAssignmentColumns = for id, assignment of @assignments
