Classes at Pomona aren't just small—they're intimate. If you are afraid of intimacy, be warned; you will be expected to participate at Pomona. You won't be listening to tape-recorded lectures in a hall full of 500 disinterested students. Classes are largely discussion based, and if you don't keep up, you won't just be threatened with grade penalization, your peers might think less of you, as well! Remember, academic discussion is like a multi-fronted battle, and you must defend your position, crushing your opposition until you stand alone and victorious over your foe's slaughtered, rhetorical remains! Actually, discussion classes at Pomona are more like a friendly meeting than a battle. Students and professors tend to be very accepting of diverse and diverting ideas (occasionally even to a fault). As for professors, they are accessible, interesting, and generally at least as engaged in their teaching duties as they are in trying to get their latest academic treatises published. They are wonderful resources and guides when a student is self-motivated, but they tend to do little to inspire the chronically apathetic—many say that Pomona makes it too easy for the lazy to slide by.
Overall, what you'll find at Pomona is a bunch of professors with varied expectations for their students; some are easy graders, some are not; some will push you, and some will do everything in their power to make sure you don't have to work a lick. Then again, when you stay up drinking every night, skip half of the assignments, and still pull down a solid B+/A- in every class, something might be a little fishy.