In modern schools, students are given shallow surveys of the history of philosophy--from the ancient masters to modern fools. This is not the study of philosophy, but mere trivia, and the reason why philosophy is disrespected today.
The study of true philosophy requires a complete commitment to the classical liberal arts. Students must learn Grammar, Reasoning and Rhetoric, upon which all philosophical discussion is based. Students must also study (classical) Arithmetic, Geometry, Music and Astronomy, without which, no one can "philosophize correctly".
Philosophy, properly speaking, consists of the study of Reasoning (ordering the mind), Ethics (ordering the affections and will), and Physics and Metaphysics (discovering the order created by God in nature). All of these are studied in Aristotle's works, which is why he was called "the Philosopher" throughout Church history.
It is also important to study the Dialogues of Plato, which model for us the method of investigation employed in philosophy. While the dialogues are of value for their actual doctrine, they are of greater value for the experience they provide diligent students through the study of Plato's arguments.
All of these studies are available through the CLAA.