Great modern life shot. Not sure if it is right for free study, though. I think your ratings will suffer a bit because of the subject material. Unfortunately, most like fantasy, not reality.
I like the various colors in this picture. Maybe if you had positioned the girls in an area away from the grate it may have had a little more oomph overall.
That is some fascinating hair!!! I like it that they look so happy. Like there is a real bond to their togetherness. I wonder what they do for a living. It looks so normal (or at least somewhat normal) for them all to be standing there together -- but get them into a normal work environment, and you wonder if they totally stand out. VERY interesting and cool!