Prefects fick docka punkter under Umbridges regel. Jag tror att medlemmarna i inkvisitoriet kan ha kunnat ta poäng. I Phoenix-ordningen ser vi Draco ta poäng från Harry, Ernie Macmillan (även prefekt), Ron (också prefekt) och Hermione (också prefekt). Det kan vara att endast Inquisitorial Squad-medlemmar kunde ta poäng. Det skulle förklara avviket mellan Secret of Secrets och Phoenix-ordningen .
ETA: Ja, det var Inquisitorial Squad som kunde ta poäng i Phoenix-ordningen
‘The Inquisitorial Squad, Granger,’ said Malfoy, pointing towards a tiny silver ‘I’ on his robes just beneath his prefect’s badge. ‘A select group of students who are supportive of the Ministry of Magic, hand-picked by Professor Umbridge. Anyway, members of the Inquisitorial Squad do have the power to dock points ... so, Granger, I’ll have five from you for being rude about our new Headmistress. Macmillan, five for contradicting me. Five because I don’t like you, Potter. Weasley, your shirt’s untucked, so I’ll have another five for that. Oh yeah, I forgot, you’re a Mudblood, Granger, so ten off for that.’
Order of the Phoenix - page 551 - Bloomsbury - chapter twenty-eight Snape's Worst Memory