I'm not sure what this was, but I'm pretty sure I liked it!
What this story wasn't: boring, normal, predictable, realistic, (back to that in a moment), or poorly written.
What this story was: funny, sad, weird and titillating.
Regarding the realistic thing: the sad stories of the main characters are all too real, but I found the director of the "class" to be unrealistic. That said, it was kind of fun to think about that director actually doing this kind of thing, and that helped to keep my attention. I wish I could say more, but spoilers lurk here.
The writing style is distinctly different. The sparse, staccato prose takes a while to get used to, but I think it contributed to the fast pace of the tale-which is impressive since it all takes place in one day of "class".
I enjoyed this story, even though it is out of my comfort zone. I would recommend this short tale to readers of thrillers and romance, as well as to readers looking for something different when they fall into a genre rut. I look forward to the second in the series!