Does the quality settings remain when you move level?

So i found this script on the Unity docs:

     function OnGUI ()
     {
         var names = QualitySettings.names;
         GUILayout.BeginVertical ();
         for (var i = 0; i < names.Length; i++)
         {
             if (GUILayout.Button (names[i]))
                 QualitySettings.SetQualityLevel (i, true);
         }
         GUILayout.EndVertical ();
     }

But my question is does the quality settings remain when you move level?