Index: lams_tool_preview/conf/language/lams/ApplicationResources.properties
===================================================================
diff -u -rdba2f7d55fdf5f5048e1f0c3ad9bcc931fc96220 -r4fc1d41d116c3105ecb1e2f7eeb89991f4042aaa
--- lams_tool_preview/conf/language/lams/ApplicationResources.properties	(.../ApplicationResources.properties)	(revision dba2f7d55fdf5f5048e1f0c3ad9bcc931fc96220)
+++ lams_tool_preview/conf/language/lams/ApplicationResources.properties	(.../ApplicationResources.properties)	(revision 4fc1d41d116c3105ecb1e2f7eeb89991f4042aaa)
@@ -166,12 +166,14 @@
 email.SAPA.factor  =SAPA Factor
 email.self.rating  =Self rating
 email.peers.rating  =Peers\' rating
-email.explanation.SPA.less.one  =SPA < 1.0
+email.explanation.SPA.less =SPA < {0}
+email.explanation.SPA.range =SPA >= {0} and <= {1}
 email.explanation.SPA.one  =SPA = 1.0
-email.explanation.SPA.greater.one  =SPA > 1.0
-email.explanation.SAPA.less.one  =SAPA < 1.0
+email.explanation.SPA.greater  =SPA > {0}
+email.explanation.SAPA.less  =SAPA < {0}
+email.explanation.SAPA.range =SAPA >= {0} and <= {1}
 email.explanation.SAPA.one  =SAPA = 1.0
-email.explanation.SAPA.greater.one  =SAPA > 1.0
+email.explanation.SAPA.greater  =SAPA > {0}
 email.explanation.1  =Your performance is below expectation and your self-assessment is too low.
 email.explanation.2  =Your performance met expectation but your self-assessment is too low.
 email.explanation.3  =Your performance exceeds expectation but your self-assessment is too low.
@@ -198,5 +200,6 @@
 label.sapa.factor  =SAPA factor
 label.sa = SA
 label.pa = PA
+label.authoring.advanced.tolearnce = Tolerance of SA and SAPA factors (hundredth, 0.0x)
 
 #======= End labels: Exported 189 labels for en AU =====
Index: lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/dbupdates/patch20200607.sql
===================================================================
diff -u
--- lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/dbupdates/patch20200607.sql	(revision 0)
+++ lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/dbupdates/patch20200607.sql	(revision 4fc1d41d116c3105ecb1e2f7eeb89991f4042aaa)
@@ -0,0 +1,15 @@
+-- Turn off autocommit, so nothing is committed if there is an error
+SET AUTOCOMMIT = 0;
+SET FOREIGN_KEY_CHECKS=0;
+-- Put all sql statements below here
+
+--LDEV-5035 Add tolerance to SAP and SAPA factors in Peer Review
+
+ALTER TABLE tl_laprev11_peerreview ADD COLUMN tolerance TINYINT UNSIGNED NOT NULL DEFAULT 0;
+
+-- Put all sql statements above here
+
+-- If there were no errors, commit and restore autocommit to on
+COMMIT;
+SET AUTOCOMMIT = 1;
+SET FOREIGN_KEY_CHECKS=1;
Index: lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/model/Peerreview.java
===================================================================
diff -u -r1ee503e3d0e0228ea8a45025fddf15d9623c0377 -r4fc1d41d116c3105ecb1e2f7eeb89991f4042aaa
--- lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/model/Peerreview.java	(.../Peerreview.java)	(revision 1ee503e3d0e0228ea8a45025fddf15d9623c0377)
+++ lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/model/Peerreview.java	(.../Peerreview.java)	(revision 4fc1d41d116c3105ecb1e2f7eeb89991f4042aaa)
@@ -127,6 +127,9 @@
     @Column(name = "notify_users_of_results")
     private boolean notifyUsersOfResults;
 
+    @Column
+    private int tolerance;
+
     // **********************************************************
     // Function method for Peerreview
     // **********************************************************
@@ -161,7 +164,7 @@
 
 	    // clone ratingCriterias as well
 	    if (ratingCriterias != null) {
-		Set<LearnerItemRatingCriteria> newCriterias = new HashSet<LearnerItemRatingCriteria>();
+		Set<LearnerItemRatingCriteria> newCriterias = new HashSet<>();
 		for (LearnerItemRatingCriteria criteria : ratingCriterias) {
 		    LearnerItemRatingCriteria newCriteria = (LearnerItemRatingCriteria) criteria.clone();
 		    // just clone old file without duplicate it in repository
@@ -453,4 +456,12 @@
     public void setShowRatingsLeftByUser(boolean showRatingsLeftByUser) {
 	this.showRatingsLeftByUser = showRatingsLeftByUser;
     }
-}
+
+    public int getTolerance() {
+	return tolerance;
+    }
+
+    public void setTolerance(int tolerance) {
+	this.tolerance = tolerance;
+    }
+}
\ No newline at end of file
Index: lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/util/EmailAnalysisBuilder.java
===================================================================
diff -u -re4074ec4e7813548c96d2338da3b42d3239b91de -r4fc1d41d116c3105ecb1e2f7eeb89991f4042aaa
--- lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/util/EmailAnalysisBuilder.java	(.../EmailAnalysisBuilder.java)	(revision e4074ec4e7813548c96d2338da3b42d3239b91de)
+++ lams_tool_preview/src/java/org/lamsfoundation/lams/tool/peerreview/util/EmailAnalysisBuilder.java	(.../EmailAnalysisBuilder.java)	(revision 4fc1d41d116c3105ecb1e2f7eeb89991f4042aaa)
@@ -470,27 +470,31 @@
 	double spa = new BigDecimal(rawSPA).setScale(2, RoundingMode.HALF_UP).doubleValue();
 	double sapa = new BigDecimal(rawSAPA).setScale(2, RoundingMode.HALF_UP).doubleValue();
 
+	double tolerance = peerreview.getTolerance() == 0 ? 0 : roundTo2Places(peerreview.getTolerance() / 100d);
+	double rangeStart = roundTo2Places(1 - tolerance);
+	double rangeEnd = roundTo2Places(1 + tolerance);
+
 	int cellToHighlight;
-	if (sapa < 1.0) {
-	    if (spa < 1.0) {
+	if (sapa < rangeStart) {
+	    if (spa < rangeStart) {
 		cellToHighlight = 1;
-	    } else if (spa > 1.0) {
+	    } else if (spa > rangeEnd) {
 		cellToHighlight = 3;
 	    } else {
 		cellToHighlight = 2;
 	    }
-	} else if (sapa > 1.0) {
-	    if (spa < 1.0) {
+	} else if (sapa > rangeEnd) {
+	    if (spa < rangeStart) {
 		cellToHighlight = 7;
-	    } else if (spa > 1.0) {
+	    } else if (spa > rangeEnd) {
 		cellToHighlight = 9;
 	    } else {
 		cellToHighlight = 8;
 	    }
 	} else {
-	    if (spa < 1.0) {
+	    if (spa < rangeStart) {
 		cellToHighlight = 4;
-	    } else if (spa > 1.0) {
+	    } else if (spa > rangeEnd) {
 		cellToHighlight = 6;
 	    } else {
 		cellToHighlight = 5;
@@ -542,34 +546,46 @@
 	// SPA / SAPA comparison results table
 	tempBuffer = new StringBuilder();
 
+	double tolerance = peerreview.getTolerance() == 0 ? 0 : roundTo2Places(peerreview.getTolerance() / 100d);
+	String rangeStart = roundTo2PlacesAsString(1 - tolerance);
+	String rangeEnd = roundTo2PlacesAsString(1 + tolerance);
+
 	tempBuffer.append("<table style=\"").append(tableBorderedStyle).append("\">\n");
 	tempBuffer.append("<tr style=\"").append(tableBorderedStyle).append("\"><td style=\"")
 		.append(tableBorderedStyle).append(headerBackgroundStyle).append(centeredStyle)
 		.append("\">&nbsp;</td><td style=\"").append(tableBorderedStyle).append(headerBackgroundStyle)
-		.append(centeredStyle).append("\">").append(getLocalisedMessage("email.explanation.SPA.less.one"))
+		.append(centeredStyle).append("\">")
+		.append(getLocalisedMessage("email.explanation.SPA.less", new Object[] { rangeStart }))
 		.append("</td><td style=\"").append(tableBorderedStyle).append(headerBackgroundStyle)
-		.append(centeredStyle).append("\">").append(getLocalisedMessage("email.explanation.SPA.one"))
+		.append(centeredStyle).append("\">")
+		.append(tolerance == 0 ? getLocalisedMessage("email.explanation.SPA.one")
+			: getLocalisedMessage("email.explanation.SPA.range", new Object[] { rangeStart, rangeEnd }))
 		.append("</td><td style=\"").append(tableBorderedStyle).append(headerBackgroundStyle)
-		.append(centeredStyle).append("\">").append(getLocalisedMessage("email.explanation.SPA.greater.one"))
+		.append(centeredStyle).append("\">")
+		.append(getLocalisedMessage("email.explanation.SPA.greater", new Object[] { rangeEnd }))
 		.append("</td>");
 
 	tempBuffer.append("</tr>\n<tr style=\"").append(tableBorderedStyle).append("\"><td style=\"")
 		.append(tableBorderedStyle).append(headerBackgroundStyle).append(centeredStyle).append("\">")
-		.append(getLocalisedMessage("email.explanation.SAPA.less.one")).append("</td>");
+		.append(getLocalisedMessage("email.explanation.SAPA.less", new Object[] { rangeStart }))
+		.append("</td>");
 	addExplanationCell(tempBuffer, 1, "email.explanation.1");
 	addExplanationCell(tempBuffer, 2, "email.explanation.2");
 	addExplanationCell(tempBuffer, 3, "email.explanation.3");
 
 	tempBuffer.append("</tr>\n<tr style=\"").append(tableBorderedStyle).append("\"><td style=\"")
 		.append(tableBorderedStyle).append(headerBackgroundStyle).append(centeredStyle).append("\">")
-		.append(getLocalisedMessage("email.explanation.SAPA.one")).append("</td>");
+		.append(tolerance == 0 ? getLocalisedMessage("email.explanation.SAPA.one")
+			: getLocalisedMessage("email.explanation.SAPA.range", new Object[] { rangeStart, rangeEnd }))
+		.append("</td>");
 	addExplanationCell(tempBuffer, 4, "email.explanation.4");
 	addExplanationCell(tempBuffer, 5, "email.explanation.5");
 	addExplanationCell(tempBuffer, 6, "email.explanation.6");
 
 	tempBuffer.append("</tr>\n<tr style=\"").append(tableBorderedStyle).append("\"><td style=\"")
 		.append(tableBorderedStyle).append(headerBackgroundStyle).append(centeredStyle).append("\">")
-		.append(getLocalisedMessage("email.explanation.SAPA.greater.one")).append("</td>");
+		.append(getLocalisedMessage("email.explanation.SAPA.greater", new Object[] { rangeEnd }))
+		.append("</td>");
 	addExplanationCell(tempBuffer, 7, "email.explanation.7");
 	addExplanationCell(tempBuffer, 8, "email.explanation.8");
 	addExplanationCell(tempBuffer, 9, "email.explanation.9");
Index: lams_tool_preview/web/pages/authoring/advance.jsp
===================================================================
diff -u -r80821e9537b4e30c38b9ca656076f09d9bcbf316 -r4fc1d41d116c3105ecb1e2f7eeb89991f4042aaa
--- lams_tool_preview/web/pages/authoring/advance.jsp	(.../advance.jsp)	(revision 80821e9537b4e30c38b9ca656076f09d9bcbf316)
+++ lams_tool_preview/web/pages/authoring/advance.jsp	(.../advance.jsp)	(revision 4fc1d41d116c3105ecb1e2f7eeb89991f4042aaa)
@@ -47,7 +47,12 @@
 	</label>
 	</div>
 
-
+	<div class="form-group">
+	<label for="tolerance">
+	<fmt:message key="label.authoring.advanced.tolearnce" />
+	<form:input type="number" min="0" max="50" path="peerreview.tolerance" id="tolerance" cssClass="form-control form-control-inline loffset5" />
+	</label>
+	</div>
 </lams:SimplePanel>
 
 <lams:OutcomeAuthor toolContentId="${peerreviewForm.peerreview.contentId}" />