Index: app/ui/src/bundle/org/sakaiproject/tool/gradebook/bundle/Messages.properties
===================================================================
--- app/ui/src/bundle/org/sakaiproject/tool/gradebook/bundle/Messages.properties	(revision 79143)
+++ app/ui/src/bundle/org/sakaiproject/tool/gradebook/bundle/Messages.properties	(working copy)
@@ -77,6 +77,7 @@
 overview_assignments_header_name=Title
 overview_assignments_header_due_date=Due Date
 overview_assignments_header_average=Class Avg
+overview_assignments_header_average_exp=Class Average (dash means no grades yet)
 overview_assignments_header_points=Points
 overview_grade_option_assignments_viewable=Currently, students can see their gradebook item scores, but not their course grade.
 overview_grade_option_course_grade_viewable=Currently, students can see their course grade (as {0}), but not their gradebook item scores.
@@ -84,8 +85,8 @@
 overview_grade_option_none_viewable=Currently, students cannot see their gradebook item scores or course grade.
 overview_grade_option_change=Change course grade options.
 overview_released=Released to Students
-overview_released_false=N
-overview_released_true=Y
+overview_released_false=No
+overview_released_true=Yes
 overview_add_item=Add Gradebook Item(s)
 overview_import_item=Import gradebook item from spreadsheet
 overview_avg_display_points= {0}/{1}
@@ -96,8 +97,8 @@
 overview_weight=Weight 
 overview_included_in_cum=Included in Course Grade
 overview_grade_editor=Grade Editor
-overview_included_in_cum_true=Y
-overview_included_in_cum_false=N
+overview_included_in_cum_true=Yes
+overview_included_in_cum_false=No
 overview_unassigned_cat_avg=N/A
 overview_legend_title=Legend:
 overview_footnote_symbol1=*
Index: app/ui/src/webapp/overview.jsp
===================================================================
--- app/ui/src/webapp/overview.jsp	(revision 79143)
+++ app/ui/src/webapp/overview.jsp	(working copy)
@@ -105,7 +105,10 @@
 			</h:column>
 			<h:column rendered="#{overviewBean.userAbleToEditAssessments}">
 				<f:facet name="header">
-		    	<h:outputText escape="false" value="&nbsp;" />
+				  <h:panelGroup> 
+		    	  <h:outputText escape="false" value="&nbsp;" />
+				    <h:outputText value="#{msgs.overview_edit}" styleClass="skip" />
+					</h:panelGroup>
 		    </f:facet>
 				<h:commandLink action="#{overviewBean.navigateToEdit}" rendered="#{gradebookItem.assignment}">
 					<h:outputText value="#{msgs.overview_edit}" />
@@ -117,6 +120,7 @@
 				<f:facet name="header">
 		    	<t:commandSortHeader columnName="mean" propertyName="mean" immediate="true" arrow="true">
 						<h:outputText value="#{msgs.overview_assignments_header_average}" />
+						<h:outputText value="#{msgs.overview_assignments_header_average_exp}" styleClass="skip"/>
 						<h:outputText value="#{msgs.overview_footnote_symbol2}" />
 		      </t:commandSortHeader>
 		    </f:facet>