Fer que 'getClasses' retorni la columna 'degree'
diff --git a/inc/Classes.php b/inc/Classes.php
index c1ee0b3..b33231e 100644
--- a/inc/Classes.php
+++ b/inc/Classes.php
@@ -16,7 +16,7 @@
 
     $isSignedIn = Users::isSignedIn();
 
-    $sentence = 'SELECT c.id, c.calendar_name, c.room, c.begins, c.ends, c.calendar_name, s.id subject_id, s.friendly_name
+    $sentence = 'SELECT c.id, c.calendar_name, c.room, c.begins, c.ends, c.calendar_name, c.degree, s.id subject_id, s.friendly_name
       '.($isSignedIn ? ', u_s.id user_subject_id' : '').',
           CASE
             WHEN c.begins > :unix_time OR c.ends < :unix_time