a good concept that i think suffers a bit because of the fencing in the foreground, which is not something i associate with dunk-tanks. but even with the fence in place, i think it would have been siginficantly improved by an unobstructed view of the teacher's face.
eeew...wouldn't want to be her!
i wish the photo could have been taken from the side without the fence...that fence really obstructs the view of your model's face. which would be pretty fun, being on the verge of being dunked in rust! yechh!
For me, having the fence in the foreground distracts and detracts from my overall impression of your photo. The fence covers up her face, but I think she's having fun.
I like the creativity of yout shot and its an interesting subject (you would think that being dunked in rust would have its own set of health issues).... One of the aspects i would have counted as most important is the look on her face but at this angle you really can't get a good sense of that emotion.