Hi Nakobear, there's only one zipper pull on the outside pocket. I took a picture of it and will try to attach it.
I usually check the lesportsac.com site for a picture and description of the general bag model such as Scuola, Gioco, Caramella, etc., but just keep in mind that as they discontinue models it's harder to find the specs for those models. Here's what they say about the Scuola (though they forgot to mention the zipped inside pocket which is the one with the plain zipper):
"
Drawstring top closure; Front pocket with zipped closure; Two side mesh pockets; Mesh pocket with zipped closure under flap; Adjustable shoulder straps; Inside carabiner on stretch cord."
I also refer for dimensions and most of the older prints to
http://tokidokiblog.wordpress.com/tokidoki-lesportsac-bag-archive/, though unfortunately the newer bag pictures beginning with Pirata are missing.
Further for authenticity and other pictures there's a bunch of sticky'd threads on this board, so I would recommend perusing through those as you have time.
Definitely do your research! I just breezed through eBay and there are more than a few that are horribly fake! Make sure the inside color of the lining is the right color, for one. Also, the bag model should be one of the ones listed in the tokidokiblog -- there's no such thing as an "overnighter" bag with its own pocket bag LMAO. Besides all the other authentication criteria, of course.
For Diana, the Scuola is actually quite sizeable, just a tad bit smaller than regular backpacks by Jansport, etc. I think it's capable of holding any folders or binders. What's A4 size? Is that close to or a little larger than 8.5inches x 11inches? I'm going to try to attach a picture of mine that has a 1" 8.5x11 binder and a red manila folder with various papers in it and my other satellite/makeup bags in it, so you can see there's ample room. On second thought, the binder is stretching it as you can see it's almost hitting the top seam of the backpack. Just the red folder would be a better fit.