Index: wp-admin/includes/template.php
===================================================================
--- wp-admin/includes/template.php	(revision 28906)
+++ wp-admin/includes/template.php	(working copy)
@@ -2135,7 +2135,7 @@
 		$title = sprintf( __( '%s rating' ), number_format_i18n( $rating, 1 ) );
 	}
 
-	echo '<div class="star-rating" title="' . esc_attr( $title ) . '">';
+	echo '<div class="star-rating" title="' . esc_attr( $title ) . '"><span class="screen-reader-text">' . esc_attr( $title ) . '</span>';
 	echo str_repeat( '<div class="star star-full"></div>', $full_stars );
 	echo str_repeat( '<div class="star star-half"></div>', $half_stars );
 	echo str_repeat( '<div class="star star-empty"></div>', $empty_stars);