PLUS Loan Interest Rates. Interest rates on Parent PLUS and Grad PLUS Loans are the same. Students attending graduate school and professional school were first able to borrow the Grad PLUS Loan in the 2006-2007 academic year.
Neptulon is the strongest Elemental Lord, Al Akir is the weakest. Ragnaros was never killed just banished back to his realm, the Fire lands, any multidimensional being is generally beyond the ability of mortals (us the players) to truly kill a permanent kill.
So powerful is his attachment that he is unable even to destroy a image of Allura. Lotor's hatred of Keith is even stronger, for he has seen Allura's love for Keith. Because of the bond Allura and Keith share, Lotor has singled him out for death more than any other Voltron Force member.