This is certainly a confusing setup.
It doesn't look like parallel or series to me. Parallel would mean both the positive leads are conencted, and negative leads are connected. Series would be positive of one cap connected to negative of another. I'm not sure what the effects of your combination will be. I'm not even sure it will have an effect, since the positive leads aren't connected to anything. If the capacitors are nonpolar, it would be series, but if they are polar, then I'm stumped.
What is this setup for?
edit: nm, reread your post and saw it was a class problem.