diff --git a/BO/Views/croom/grade4.cshtml b/BO/Views/croom/grade4.cshtml
index a07692d..84baf8d 100644
--- a/BO/Views/croom/grade4.cshtml
+++ b/BO/Views/croom/grade4.cshtml
@@ -114,7 +114,6 @@ else
             <td><textarea class="form-control" id="feedb" style="resize: none; height: 250px;" maxlength="800"></textarea></td>
         </tr>
     </table>
-    ※ 피드백은 1번 등록하면 수정할 수 없으며, 복사/붙여넣기가 불가능합니다.
     <br /><br /><br />
     <div class="text-center">
         <a href="#" id="btnpre" class="btn btn-info btn-xs" onclick="save(-1)">◀이전</a>
@@ -162,19 +161,19 @@ else
         $("body").on("click", "td.qi div.imgbox", function () {
             $(this).toggleClass("active");
         });
-        $("#feedb,#feedb2").on("keydown", function (e) {
-            if (e.keyCode == 17) {
-                alert('기능키를 사용하실 수 없습니다.');
-                $("body").focus();
-                return false;
-            }
-        }).on("mousedown", function (e) {
-            if (e.button == 2) {
-                alert('마우스를 사용하실 수 없습니다.');
-                $("body").focus();
-                return false;
-            }
-            });
+        //$("#feedb,#feedb2").on("keydown", function (e) {
+        //    if (e.keyCode == 17) {
+        //        alert('기능키를 사용하실 수 없습니다.');
+        //        $("body").focus();
+        //        return false;
+        //    }
+        //}).on("mousedown", function (e) {
+        //    if (e.button == 2) {
+        //        alert('마우스를 사용하실 수 없습니다.');
+        //        $("body").focus();
+        //        return false;
+        //    }
+        //    });
     });
     function findme() {
         bglayer(); submit();
@@ -242,9 +241,9 @@ else
         setv("cpoint", d.cpoint);
         $("#feedb").val(d.feedb);
         $("#feedb").removeAttr("readonly");
-        if (getdb(d.feedb) != '') {
-            $("#feedb").attr("readonly", "readonly");
-        }
+        //if (getdb(d.feedb) != '') {
+        //    $("#feedb").attr("readonly", "readonly");
+        //}
         $("#btnpre,#btnnext").show();
         if (_ridx == 1) {
             $("#btnpre").hide();
diff --git a/Dao/MyBatis/Maps/Lect.xml b/Dao/MyBatis/Maps/Lect.xml
index ade1d3b..437f960 100644
--- a/Dao/MyBatis/Maps/Lect.xml
+++ b/Dao/MyBatis/Maps/Lect.xml
@@ -970,7 +970,7 @@
         <update id="lect.lectsd.save" parameterClass="lectsd">
             update lectsd set <include refid="sql.up"></include>
             ,iscopy=#iscopy#,cpoint=#cpoint#
-            ,feedb=case when feedb is null then #feedb# else feedb end
+            ,feedb=#feedb#
             ,checktime=case when #cpoint# is not null or #feedb# is not null then now() else checktime end
             ,checkip=case when #cpoint# is not null or #feedb# is not null then #uip# else checkip end
             where lectno=#lectno# and sdno=#sdno#;
@@ -986,7 +986,7 @@
         </update>
         <update id="lect.lectsd.savebatch" parameterClass="lectsd">
             update lectsd set <include refid="sql.up"></include>
-            ,iscopy=#iscopy#,cpoint=#cpoint#,feedb=case when feedb is null then #feedb# else feedb end
+            ,iscopy=#iscopy#,cpoint=#cpoint#,feedb=#feedb#
             ,checktime=case when #cpoint# is not null or #feedb# is not null then now() else checktime end
             ,checkip=case when #cpoint# is not null or #feedb# is not null then #uip# else checkip end
             where lectno in ($lectnos$) and sdno=#sdno#;