Seeing Ray still in his cap and gown, Robert tells him, "You can take off your robe now, Merlin," comparing him to the wizard from the stories of King Arthur and his Knights of the Round Table, and movies such as Excalibur.
When they get home from the ceremony the kids arent with them. But debra says she needs to check on the kids. So were they home alone or were they with the family at the ceremony and it was not shown.