It is true that Hermione was put in Gryffindor despite being considered one of the cleverest witches of her time. However, there are several reasons why Hermione could have been put in Gryffindor. Firstly, the Sorting Hat values choice and listens to what house the student wants to be sorted into. Therefore, there is a strong chance that Hermione might have secretly wanted to be in Gryffindor. Furthermore, Ravenclaw might be looking for a different kind of intelligence that Hermione may have, but not in the same way that other Ravenclaws do.