It's great to see the tropes of the Batman comics applied to a girls' boarding school adventure. This sort of genre-mixing is exactly how Marvel's hit great success in some of its recent titles, so it's good to see DC following in their footsteps. 
 Cloonan is also a strong author creating interesting characters and fun mysteries. I enjoyed seeing the gang come together. Thankfully, she's also supported with superb art by Karl Kirsch. 
 My one complaint with the title is the depiction of Croc, which is badly at odds with his recent depictions in Batwoman, but DC seems to have had major editorial issues with him throughout the Nu52.