Merge pull request #4529 from edx/markhoeber-documentation-doc420

Added text about grade ranges and certificates

docs/en_us/course_authors/source/building_course/establish_grading_policy.rst

@@ -69,6 +69,15 @@ You use the grade range control to change these settings:
 After you make any changes to the grade range, you must click **Save Changes**
 at the bottom of the page.
 
+.. _Grade Ranges and Certificates:
+
+==============================
+Grade Ranges and Certificates
+==============================
+
+If you plan for your course to offer certificates, note that a student will
+qualify for a certificate by earning any grade over the F, or Fail, threshold.
+This is true regardless of how many grade levels you add in the grade range.
 
 .. _Set the Grace Period:
 

docs/en_us/course_authors/source/change_log.rst

@@ -13,6 +13,9 @@ July, 2014
 
    * - Date
      - Change
+   * - 07/23/14
+     - Added the section :ref:`Grade Ranges and Certificates` to the
+       :ref:`Establish a Grading Policy` chapter.
    * - 07/22/14
      - Added :ref:`Example Messages to Students` to the :ref:`Launch` chapter.
    * - 07/15/14