Index: lams_common/db/sql/create_lams_11_tables.sql
===================================================================
diff -u -rc989378786b026ab4d78cd8064eaa6d7e63c4db6 -r192608ebab727b612fcc5bff809846856509a2df
--- lams_common/db/sql/create_lams_11_tables.sql	(.../create_lams_11_tables.sql)	(revision c989378786b026ab4d78cd8064eaa6d7e63c4db6)
+++ lams_common/db/sql/create_lams_11_tables.sql	(.../create_lams_11_tables.sql)	(revision 192608ebab727b612fcc5bff809846856509a2df)
@@ -656,7 +656,6 @@
      , locked_for_edit TINYINT DEFAULT 0
 	 , marks_released TINYINT DEFAULT 0
      , version INTEGER DEFAULT 1
-     , release_date DATETIME
      , PRIMARY KEY (lesson_id)
      , INDEX (learning_design_id)
      , CONSTRAINT FK_lams_lesson_1_1 FOREIGN KEY (learning_design_id)
@@ -671,7 +670,6 @@
      , CONSTRAINT FK_lams_lesson_4 FOREIGN KEY (lesson_state_id)
                   REFERENCES lams_lesson_state (lesson_state_id)
      , INDEX (class_grouping_id)
-     , INDEX idx_release_date (release_date)
      , CONSTRAINT FK_lams_lesson_5 FOREIGN KEY (class_grouping_id)
                   REFERENCES lams_grouping (grouping_id)
 )TYPE=InnoDB;
Index: lams_common/src/java/org/lamsfoundation/lams/dbupdates/patch02040006.sql
===================================================================
diff -u -rc989378786b026ab4d78cd8064eaa6d7e63c4db6 -r192608ebab727b612fcc5bff809846856509a2df
--- lams_common/src/java/org/lamsfoundation/lams/dbupdates/patch02040006.sql	(.../patch02040006.sql)	(revision c989378786b026ab4d78cd8064eaa6d7e63c4db6)
+++ lams_common/src/java/org/lamsfoundation/lams/dbupdates/patch02040006.sql	(.../patch02040006.sql)	(revision 192608ebab727b612fcc5bff809846856509a2df)
@@ -121,6 +121,8 @@
    , PRIMARY KEY (lesson_id,preceding_lesson_id)
 )TYPE=InnoDB;
 
+ALTER TABLE lams_lesson DROP COLUMN release_date;
+
 COMMIT;
 SET AUTOCOMMIT = 1;
 set FOREIGN_KEY_CHECKS = 1;
Index: lams_common/src/java/org/lamsfoundation/lams/lesson/Lesson.java
===================================================================
diff -u -r6950295e2d5e90ffae268faeae946718654ddc7b -r192608ebab727b612fcc5bff809846856509a2df
--- lams_common/src/java/org/lamsfoundation/lams/lesson/Lesson.java	(.../Lesson.java)	(revision 6950295e2d5e90ffae268faeae946718654ddc7b)
+++ lams_common/src/java/org/lamsfoundation/lams/lesson/Lesson.java	(.../Lesson.java)	(revision 192608ebab727b612fcc5bff809846856509a2df)
@@ -148,8 +148,6 @@
     /** Persistent field. Defaults to FALSE if not set to anything by a constructor parameter. */
     private Boolean marksReleased;
     
-    private Date releaseDate;
-    
     /**
      * For lesson conditional release
      */
@@ -700,18 +698,6 @@
         this.marksReleased = marksReleased;
     }
 
-    /**
-     * @hibernate.property type="java.util.Date" column="release_date"
-     * 
-     */
-    public Date getReleaseDate() {
-	return releaseDate;
-    }
-
-    public void setReleaseDate(Date releaseDate) {
-	this.releaseDate = releaseDate;
-    }
-
     public Set<Lesson> getPrecedingLessons() {
         return precedingLessons;
     }