ria-controls="grading-panel-content"
      aria-expanded="{{!$ctrl.panelCollapse}}"
    >
      <span
        class="icon m-0"
        ng-class="{
          'icon-chevron-right': !$ctrl.panelCollapse(),
          'icon-chevron-left': $ctrl.panelCollapse()
        }"
      ></span>
      <span
        class="sr-only"
        ng-if="!$ctrl.panelCollapse()"
        translate="GRADING_PANEL_COLLAPSE"
      ></span>
      <span
        class="sr-only"
        ng-if="$ctrl.panelCollapse()"
        translate="GRAD