diff --git a/src/main/java/org/wise/vle/domain/webservice/crater/AbstractCRaterRequest.java b/src/main/java/org/wise/vle/domain/webservice/crater/AbstractCRaterRequest.java
new file mode 100644
index 000000000..782d50c4a
--- /dev/null
+++ b/src/main/java/org/wise/vle/domain/webservice/crater/AbstractCRaterRequest.java
@@ -0,0 +1,27 @@
+package org.wise.vle.domain.webservice.crater;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Setter
+public abstract class AbstractCRaterRequest implements CRaterRequest {
+  String itemId;
+  String cRaterClientId;
+
+  @Getter
+  String cRaterUrl;
+
+  public String generateBodyData() throws JSONException {
+    JSONObject body = new JSONObject();
+    body.put("client_id", cRaterClientId);
+    body.put("item_id", itemId);
+    return body.toString();
+  }
+
+  public boolean forBerkeleyEndpoint() {
+    return itemId.length() > 9 && itemId.substring(0, 9).equals("berkeley_");
+  }
+}
diff --git a/src/main/java/org/wise/vle/domain/webservice/crater/CRaterScoringRequest.java b/src/main/java/org/wise/vle/domain/webservice/crater/CRaterScoringRequest.java
index 6de02ef02..833ca9402 100644
--- a/src/main/java/org/wise/vle/domain/webservice/crater/CRaterScoringRequest.java
+++ b/src/main/java/org/wise/vle/domain/webservice/crater/CRaterScoringRequest.java
@@ -5,24 +5,16 @@
 import org.json.JSONObject;
 import org.wise.portal.presentation.util.http.Base64;
 
-import lombok.Getter;
 import lombok.Setter;
 
 @Setter
-public class CRaterScoringRequest implements CRaterRequest {
-  String itemId;
+public class CRaterScoringRequest extends AbstractCRaterRequest {
   String responseId;
   String responseText;
-  String cRaterClientId;
-
-  @Getter
-  String cRaterUrl;
 
   public String generateBodyData() throws JSONException {
-    JSONObject body = new JSONObject();
-    body.put("client_id", cRaterClientId);
+    JSONObject body = new JSONObject(super.generateBodyData());
     body.put("service", "ScoringService");
-    body.put("item_id", itemId);
     JSONArray responses = new JSONArray();
     JSONObject response = new JSONObject();
     response.put("response_id", responseId);
@@ -31,9 +23,4 @@ public String generateBodyData() throws JSONException {
     body.put("responses", responses);
     return body.toString();
   }
-
-  // Duplicate method implementation would be abstracted in issue 285  
-  public boolean forBerkeleyEndpoint() {
-    return itemId.substring(0, 9).equals("berkeley_");
-  }
 }
diff --git a/src/main/java/org/wise/vle/domain/webservice/crater/CRaterVerificationRequest.java b/src/main/java/org/wise/vle/domain/webservice/crater/CRaterVerificationRequest.java
index f3dcaf14b..05a3eec42 100644
--- a/src/main/java/org/wise/vle/domain/webservice/crater/CRaterVerificationRequest.java
+++ b/src/main/java/org/wise/vle/domain/webservice/crater/CRaterVerificationRequest.java
@@ -3,27 +3,10 @@
 import org.json.JSONException;
 import org.json.JSONObject;
 
-import lombok.Getter;
-import lombok.Setter;
-
-@Setter
-public class CRaterVerificationRequest implements CRaterRequest {
-  String itemId;
-  String cRaterClientId;
-
-  @Getter
-  String cRaterUrl;
-
-  public String generateBodyData() throws JSONException {
-    JSONObject body = new JSONObject();
-    body.put("client_id", cRaterClientId);
-    body.put("service", "VerificationService");
-    body.put("item_id", itemId);
-    return body.toString();
-  }
-
-  // Duplicate method implementation would be abstracted in issue 285
-  public boolean forBerkeleyEndpoint() {
-    return itemId.substring(0, 9).equals("berkeley_");
-  }
+public class CRaterVerificationRequest extends AbstractCRaterRequest {
+    public String generateBodyData() throws JSONException {
+        JSONObject body = new JSONObject(super.generateBodyData());
+        body.put("service", "VerificationService");
+        return body.toString();
+    }
 }