Here are some other ways to say "classification" in Tagalog, depending on the context:
* Pagpapangkat - Grouping or categorizing.
* Pagtatakda ng kategorya - Defining categories.
* Paglalagay sa kategorya - Placing into categories.
* Paghahati-hati - Dividing into parts or groups.
The best translation will depend on the specific context and the type of classification being discussed.