Index: lams_tool_assessment/conf/language/lams/ApplicationResources.properties
===================================================================
diff -u -rdecee05de5d7a90fe2aef3af04f588494262685b -rbfeb7dd59aa544d49b9c985904aade7628ddc733
--- lams_tool_assessment/conf/language/lams/ApplicationResources.properties	(.../ApplicationResources.properties)	(revision decee05de5d7a90fe2aef3af04f588494262685b)
+++ lams_tool_assessment/conf/language/lams/ApplicationResources.properties	(.../ApplicationResources.properties)	(revision bfeb7dd59aa544d49b9c985904aade7628ddc733)
@@ -224,6 +224,7 @@
 label.authoring.basic.select.random.question = Random question from pool
 label.authoring.basic.random.question = Question
 label.authoring.basic.warning.too.many.questions = Too many questions in a list. Please, remove some of them.
+label.authoring.preview.skip.validation = As a learner you should answer all required questions. In preview mode you are allowed to press this button again to continue.
 authoring.import.result = Import tool content result
 authoring.title.import = Import questions
 authoring.import.instruction = Please choose questions to import.
Index: lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/web/controller/LearningController.java
===================================================================
diff -u -r6f59d1b57843500bf2a226bfea958cc2b9d795ee -rbfeb7dd59aa544d49b9c985904aade7628ddc733
--- lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/web/controller/LearningController.java	(.../LearningController.java)	(revision 6f59d1b57843500bf2a226bfea958cc2b9d795ee)
+++ lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/web/controller/LearningController.java	(.../LearningController.java)	(revision bfeb7dd59aa544d49b9c985904aade7628ddc733)
@@ -584,8 +584,9 @@
 	//get user answers from request and store them into sessionMap
 	storeUserAnswersIntoSessionMap(request, pageNumber);
 
+	ToolAccessMode mode = (ToolAccessMode) sessionMap.get(AttributeNames.ATTR_MODE);
 	boolean isTimelimitExpired = WebUtil.readBooleanParam(request, "isTimelimitExpired", false);
-	if (!isTimelimitExpired) {
+	if (!isTimelimitExpired && (mode == null || !mode.equals(ToolAccessMode.AUTHOR))) {
 
 	    // check all required questions got answered
 	    int pageNumberWithUnasweredQuestions = validateAnswers(sessionMap);
@@ -608,7 +609,6 @@
 	}
 
 	String redirectURL = "redirect:/learning/start.do";
-	ToolAccessMode mode = (ToolAccessMode) sessionMap.get(AttributeNames.ATTR_MODE);
 	if (mode != null) {
 	    redirectURL = WebUtil.appendParameterToURL(redirectURL, AttributeNames.ATTR_MODE, mode.toString());
 	}
@@ -939,7 +939,6 @@
      */
     @SuppressWarnings("unchecked")
     private int validateAnswers(SessionMap<String, Object> sessionMap) {
-
 	List<Set<QuestionDTO>> pagedQuestionDtos = (List<Set<QuestionDTO>>) sessionMap
 		.get(AssessmentConstants.ATTR_PAGED_QUESTION_DTOS);
 
Index: lams_tool_assessment/web/pages/learning/learning.jsp
===================================================================
diff -u -r4a0e10d108754527a7edbf79caa99c30d1f1287d -rbfeb7dd59aa544d49b9c985904aade7628ddc733
--- lams_tool_assessment/web/pages/learning/learning.jsp	(.../learning.jsp)	(revision 4a0e10d108754527a7edbf79caa99c30d1f1287d)
+++ lams_tool_assessment/web/pages/learning/learning.jsp	(.../learning.jsp)	(revision bfeb7dd59aa544d49b9c985904aade7628ddc733)
@@ -100,6 +100,8 @@
 	</c:forEach>
 	
 	<script type="text/javascript">
+		var skipValidation = false;
+		
 		$(document).ready(function(){
 			//if isLeadershipEnabled - enable/disable submit buttons for hedging marks type of questions
 			if (${isLeadershipEnabled}) {
@@ -550,6 +552,15 @@
 				return true;
 				
 			} else {
+				<c:if test="${mode == 'author'}">
+					if (!skipValidation) {
+						alert('<fmt:message key="label.authoring.preview.skip.validation" />');
+						skipValidation = true;
+					} else {
+						return true;
+					}
+				</c:if>
+			
 				//remove .bg-warning from all questions
 				$('[id^=question-area-]').removeClass('bg-warning');
 				$('#warning-answers-required').hide();