Index: lams_admin/conf/language/lams/ApplicationResources.properties
===================================================================
diff -u -r193fb7d45f2b7b2194675895a118cf1d9530bda2 -r5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6
--- lams_admin/conf/language/lams/ApplicationResources.properties	(.../ApplicationResources.properties)	(revision 193fb7d45f2b7b2194675895a118cf1d9530bda2)
+++ lams_admin/conf/language/lams/ApplicationResources.properties	(.../ApplicationResources.properties)	(revision 5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6)
@@ -517,6 +517,11 @@
 sysadmin.maintain.session.delete  =Delete
 config.display.portrait  =Display learner's portrait in a progress bar
 config.kumalive.enable  =Enable Kumalive
-
-
+admin.delete.lessons =Delete all lessons
+msg.delete.all.lesson.confirm.1 =You are about to PERMANENTLY delete ALL lessons from course "{0}". Are you ABSOLUTELY sure that you want to do this? There will be no turning back!
+msg.delete.all.lesson.confirm.2 =ALL lessons will be deleted, including active ones with learners in them. NO lessons will be left in the course. Are you sure you want to continue?
+msg.delete.all.lesson.error =Error while deleting course lessons lessons
+label.delete.all.lesson.count  =Number of remaining / total lessons:
+label.delete.all.lesson.progress  =Deleting...
+sysadmin.lesson.delete.title =Delete all lessons from course
 #======= End labels: Exported 511 labels for en AU =====
Index: lams_admin/src/java/org/lamsfoundation/lams/admin/web/action/OrganisationAction.java
===================================================================
diff -u -r85ef8aca5722a36582117db1e8b988e2c16b6369 -r5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6
--- lams_admin/src/java/org/lamsfoundation/lams/admin/web/action/OrganisationAction.java	(.../OrganisationAction.java)	(revision 85ef8aca5722a36582117db1e8b988e2c16b6369)
+++ lams_admin/src/java/org/lamsfoundation/lams/admin/web/action/OrganisationAction.java	(.../OrganisationAction.java)	(revision 5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6)
@@ -26,6 +26,7 @@
 import java.io.IOException;
 import java.util.Collections;
 import java.util.List;
+import java.util.Set;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -36,7 +37,9 @@
 import org.apache.struts.action.ActionForward;
 import org.apache.struts.action.ActionMapping;
 import org.apache.struts.action.DynaActionForm;
+import org.apache.tomcat.util.json.JSONException;
 import org.lamsfoundation.lams.admin.service.AdminServiceProxy;
+import org.lamsfoundation.lams.lesson.Lesson;
 import org.lamsfoundation.lams.usermanagement.Organisation;
 import org.lamsfoundation.lams.usermanagement.OrganisationState;
 import org.lamsfoundation.lams.usermanagement.OrganisationType;
@@ -149,23 +152,71 @@
 	return null;
     }
 
+    public ActionForward deleteAllLessonsInit(ActionMapping mapping, ActionForm form, HttpServletRequest request,
+	    HttpServletResponse response) throws IOException {
+	if (!AdminServiceProxy.getSecurityService(getServlet().getServletContext()).isSysadmin(getUserID(),
+		"display cleanup preview lessons", false)) {
+	    response.sendError(HttpServletResponse.SC_FORBIDDEN, "User is not a sysadmin");
+	    return null;
+	}
+
+	if (!(request.isUserInRole(Role.SYSADMIN))) {
+	    request.setAttribute("errorName", "OrganisationAction");
+	    request.setAttribute("errorMessage", AdminServiceProxy.getMessageService(getServlet().getServletContext())
+		    .getMessage("error.need.sysadmin"));
+	    return mapping.findForward("error");
+	}
+
+	Integer organisationId = WebUtil.readIntParam(request, "orgId");
+	Organisation organisation = (Organisation) AdminServiceProxy.getService(getServlet().getServletContext())
+		.findById(Organisation.class, organisationId);
+	int lessonCount = organisation.getLessons().size();
+	request.setAttribute("lessonCount", lessonCount);
+	request.setAttribute("courseName", organisation.getName());
+
+	return mapping.findForward("deleteAllLessons");
+    }
+
+    @SuppressWarnings("unchecked")
+    public ActionForward deleteAllLessons(ActionMapping mapping, ActionForm form, HttpServletRequest request,
+	    HttpServletResponse response) throws IOException, JSONException {
+	Integer userID = getUserID();
+	Integer limit = WebUtil.readIntParam(request, "limit", true);
+	Integer organisationId = WebUtil.readIntParam(request, "orgId");
+	Organisation organisation = (Organisation) AdminServiceProxy.getService(getServlet().getServletContext())
+		.findById(Organisation.class, organisationId);
+	for (Lesson lesson : (Set<Lesson>) organisation.getLessons()) {
+	    log.info("Deleting lesson: " + lesson.getLessonId());
+	    // role is checked in this method
+	    AdminServiceProxy.getMonitoringService(getServlet().getServletContext())
+		    .removeLessonPermanently(lesson.getLessonId(), userID);
+	    if (limit != null) {
+		limit--;
+		if (limit == 0) {
+		    break;
+		}
+	    }
+	}
+
+	organisation = (Organisation) AdminServiceProxy.getService(getServlet().getServletContext())
+		.findById(Organisation.class, organisationId);
+	response.setContentType("application/json;charset=utf-8");
+	response.getWriter().print(organisation.getLessons().size());
+	return null;
+    }
+
     private ActionForward error(ActionMapping mapping, HttpServletRequest request) {
 	OrganisationAction.messageService = AdminServiceProxy.getMessageService(getServlet().getServletContext());
 	request.setAttribute("errorName", "OrganisationAction");
 	request.setAttribute("errorMessage", OrganisationAction.messageService.getMessage("error.authorisation"));
 	return mapping.findForward("error");
     }
 
-    /*
-     * public ActionForward remove(ActionMapping mapping, ActionForm form,HttpServletRequest request,
-     * HttpServletResponse response){
-     * Integer orgId = WebUtil.readIntParam(request,"orgId");
-     * getService().deleteById(Organisation.class,orgId);
-     * Integer parentId = WebUtil.readIntParam(request,"parentId");
-     * request.setAttribute("org",parentId);
-     * return mapping.findForward("orglist");
-     * }
-     */
+    private Integer getUserID() {
+	HttpSession ss = SessionManager.getSession();
+	UserDTO user = (UserDTO) ss.getAttribute(AttributeNames.USER);
+	return user == null ? null : user.getUserID();
+    }
 
     @SuppressWarnings("unchecked")
     private void initLocalesAndStatus() {
Index: lams_admin/web/WEB-INF/struts-config.xml
===================================================================
diff -u -ra4fd7ba340a2beac7436660039f13b9c8708f172 -r5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6
--- lams_admin/web/WEB-INF/struts-config.xml	(.../struts-config.xml)	(revision a4fd7ba340a2beac7436660039f13b9c8708f172)
+++ lams_admin/web/WEB-INF/struts-config.xml	(.../struts-config.xml)	(revision 5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6)
@@ -307,6 +307,11 @@
         path="/orgmanage.do"
         redirect="false"
       />
+      <forward
+        name="deleteAllLessons"
+        path=".deleteAllLessons"
+        redirect="false"
+      />
     </action>
     <action
       path="/usersave"
Index: lams_admin/web/WEB-INF/tiles-defs.xml
===================================================================
diff -u -r21991bdc561db26de7c7e0687a10b2c2d7743074 -r5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6
--- lams_admin/web/WEB-INF/tiles-defs.xml	(.../tiles-defs.xml)	(revision 21991bdc561db26de7c7e0687a10b2c2d7743074)
+++ lams_admin/web/WEB-INF/tiles-defs.xml	(.../tiles-defs.xml)	(revision 5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6)
@@ -49,6 +49,11 @@
 		<put name="content" value="cleanupPreviewLessons.jsp" />	
 	</definition>
 	
+	<definition name=".deleteAllLessons" path="/template.jsp">
+		<put name="title" value="sysadmin.lesson.delete.title"/>
+		<put name="content" value="/organisation/deleteAllLessons.jsp" />	
+	</definition>
+	
 	<definition name=".importv1result" path="/template.jsp">
 		<put name="title" value="admin.user.management"/>
 		<put name="content" value="import/importv1result.jsp" />	
Index: lams_admin/web/organisation/deleteAllLessons.jsp
===================================================================
diff -u
--- lams_admin/web/organisation/deleteAllLessons.jsp	(revision 0)
+++ lams_admin/web/organisation/deleteAllLessons.jsp	(revision 5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6)
@@ -0,0 +1,76 @@
+<%@ include file="/taglibs.jsp"%>
+
+<script type="text/javascript" src="<lams:LAMSURL/>includes/javascript/jquery.js"></script>
+<script type="text/javascript">
+
+$(document).ready(function(){
+	var lessonCount = ${lessonCount},
+		deleteButton = $('#deleteButton');
+	
+	if (lessonCount == 0) {
+		deleteButton.prop('disabled', true);
+		return;
+	}
+	
+	deleteButton.click(function(){
+		
+		if (!confirm('<fmt:message key="msg.delete.all.lesson.confirm.1"><fmt:param value="${courseName}"/></fmt:message>')
+				|| !confirm('<fmt:message key="msg.delete.all.lesson.confirm.2" />')) {
+			return;
+		}
+		
+		deleteButton.prop('disabled', true);
+		$('#deletingBox').show();
+		
+		// delete lesson in batches of 5 until done
+		deleteAllLessons(lessonCount, $('#lessonCount'));
+	});
+});
+
+function deleteAllLessons(lessonCount, lessonCountSpan){
+	if (lessonCount <= 0) {
+		$('#deletingBox').hide();
+		return;
+	}
+	$.ajax({
+		'cache'   : false,
+		'url'     : '<lams:WebAppURL />organisation.do',
+		'data'    : {
+			'method' : 'deleteAllLessons',
+			'limit'  : 5,
+			'orgId'  : ${param.orgId}
+		},
+		'success' : function(response){
+			try {
+				lessonCount = response;
+				lessonCountSpan.text(lessonCount);
+				setTimeout(function(){
+					deleteAllLessons(lessonCount, lessonCountSpan);
+				}, 500);
+			} catch(err) {
+				alert('<fmt:message key="msg.delete.all.lesson.error" />');
+				lessonCountSpan.text('ERROR');
+			}
+		},
+		'error'	  : function(){
+			alert('<fmt:message key="msg.delete.all.lesson.error" />');
+		}
+	});
+}
+</script>
+
+<p>
+	<a href="orgmanage.do?org=1" class="btn btn-default"><fmt:message key="admin.course.manage" /></a>
+	:  <a href="orgmanage.do?org=${param.orgId}" class="btn btn-default"><c:out value="${courseName}" /></a>
+</p>
+
+<html:errors />
+
+<fmt:message key="label.delete.all.lesson.count" />&nbsp;<span id="lessonCount">${lessonCount}</span>&nbsp;/&nbsp;<span>${lessonCount}</span>
+<div id="deletingBox" style="display: none">
+	<fmt:message key="label.delete.all.lesson.progress" />
+</div>
+
+<div class="pull-right">
+	<button id="deleteButton" class="btn btn-primary loffset5"><fmt:message key="admin.delete"/></button>
+</div>
\ No newline at end of file
Index: lams_admin/web/organisation/list.jsp
===================================================================
diff -u -r7dce137f52dd2664abf689e18789fab2a79b4407 -r5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6
--- lams_admin/web/organisation/list.jsp	(.../list.jsp)	(revision 7dce137f52dd2664abf689e18789fab2a79b4407)
+++ lams_admin/web/organisation/list.jsp	(.../list.jsp)	(revision 5f626596bbeb5bbbbd800be3ddf6ff7f1bdaeaa6)
@@ -154,7 +154,7 @@
 					
 					<% if (request.isUserInRole(Role.SYSADMIN)) { %>
 						<a href="clone.do?groupId=<c:out value="${OrgManageForm.parentId}"/>" class="btn btn-default"><i class="fa fa-clone"></i><span class="hidden-xs"> <fmt:message key="title.clone.lessons" /></span></a>
-						<a href="organisation.do?method=deleteAllLessonsInit&groupId=<c:out value="${OrgManageForm.parentId}"/>" class="btn btn-default"><i class="fa fa-bomb"></i><span class="hidden-xs"> <fmt:message key="admin.delete.lessons" /></span></a>
+						<a href="organisation.do?method=deleteAllLessonsInit&orgId=<c:out value="${OrgManageForm.parentId}"/>" class="btn btn-default"><i class="fa fa-bomb"></i><span class="hidden-xs"> <fmt:message key="admin.delete.lessons" /></span></a>
 					<% } %>
 				</div>
 			</div>
@@ -228,18 +228,19 @@
 	
 	<div class="panel panel-default voffset5" >
 		<div class="panel-heading">
-			<span class="panel-title">
-				<bean:write name="OrgManageForm" property="parentName"/>
-			</span>
-			<div class="btn-group btn-group-sm  pull-right">
-				<logic:equal name="editGroup" value="true">
-					<input class="btn btn-default" type="button" value="<fmt:message key="admin.edit" />&nbsp;<bean:write name="OrgManageForm" property="parentName"/>" onclick=javascript:document.location='organisation.do?method=edit&orgId=<c:out value="${OrgManageForm.parentId}"/>' />
-				</logic:equal>
-				<input class="btn btn-default" type="button" value="<fmt:message key="admin.user.manage" />" onclick=javascript:document.location='usermanage.do?org=<c:out value="${OrgManageForm.parentId}"/>' />
-				<% if (request.isUserInRole(Role.SYSADMIN)) { %>
-						<input class="btn btn-default" type="button" value="<fmt:message key="title.clone.lessons" />" onclick="javascript:document.location='clone.do?groupId=<c:out value="${OrgManageForm.parentId}"/>';">
-				<% } %>
+			<div class="panel-title">
+				<span><bean:write name="OrgManageForm" property="parentName"/></span>
+				<div class="btn-group btn-group-sm  pull-right">
+					<logic:equal name="editGroup" value="true">
+						<input class="btn btn-default" type="button" value="<fmt:message key="admin.edit" />&nbsp;<bean:write name="OrgManageForm" property="parentName"/>" onclick=javascript:document.location='organisation.do?method=edit&orgId=<c:out value="${OrgManageForm.parentId}"/>' />
+					</logic:equal>
+					<input class="btn btn-default" type="button" value="<fmt:message key="admin.user.manage" />" onclick=javascript:document.location='usermanage.do?org=<c:out value="${OrgManageForm.parentId}"/>' />
+					<% if (request.isUserInRole(Role.SYSADMIN)) { %>
+							<input class="btn btn-default" type="button" value="<fmt:message key="title.clone.lessons" />" onclick="javascript:document.location='clone.do?groupId=<c:out value="${OrgManageForm.parentId}"/>';">
+							<a href="organisation.do?method=deleteAllLessonsInit&orgId=<c:out value="${OrgManageForm.parentId}"/>" class="btn btn-default"><i class="fa fa-bomb"></i><span class="hidden-xs"> <fmt:message key="admin.delete.lessons" /></span></a>
+					<% } %>
 			</div>
+			</div>
 		</div>
 
 		<table class="table table-striped">