As the hat is placed on each student's head, it decides which house the student is more suited in, it explores their minds, and calls the house out to the crowd.
Presumptuously, the Sorting Hat is hailing each student as a subject of the house to which they will belong. Since the hat can see into each student's head, the hailing is more individualized than most. The Hat is never wrong about where a student belongs, as a magical object with unique abilities. The Sorting Hat is saying, in effect, "This is you. This is where you belong. You are brave, or you are loyal, or you are smart, or you are cunning."(118). However, the student wants so desperately to belong, so when the Hat makes the choice of the student for a certain house, the student chooses that house, too. "I'm brave!" she thinks. "I belong in Gryffindor! I'm going to be the best Gryffindor I can be!" The student responds by identifying him or herself as a member of that
house. Loyalty to the house becomes loyalty to the ideology that the house represents, and that ideology is reproduced in house members. As we have seen, the Sorting Hat does not necessarily place someone in a particular house based on the witch or wizard’s innate talents alone. It seems, sometimes, the student plays a role in which house he or she is assigned to. In Harry Potter’s case, his repeated thoughts of "not Slytherin" place him in Gryffindor. Another example, is that of Draco Malfoy expecting to be placed in Slytherin, and indeed he is Sorted into that house. Hermione Granger has indeed already made up her mind that Gryffindor is where she wants to go and is Sorted there rather than in Ravenclaw, despite her immense intelligence. Ron Weasley hopes and wishes to be in Gryffindor because the rest of his family has been Sorted there, and of course, he is. Following Althusser's thought processes, an apparent influence of free will is entirely imaginary, for in his conception, there really is no such thing as free will. Yet, in these cases where free will seems to be an important factor, the identity of the student with their respective house seems to be even stronger than for those whom the decision seems to be made without the student's input.