Thanks for all the advice so far! Yes, I did mean Rana Clamitans. We're trying to use native species for our education programs. I'm working on my proposal for this tank, so I have a few more questions:

Is there a heater that any of you have used that would work well in this type of setup? What temperature should the water be?
How deep should the water be? I think I read about 6 inches somewhere, but I'm not positive.
What humidity should I keep the tank?
Will they need a specific type of light or is just standard hood with the florescent bulb ok to use? Remember, we are actually displaying these to the public.
I've been looking at the standard glass vs. SeaClear acrylic tank. Any thoughts on which is better?
Most importantly, does anyone know where I can purchase captive bred green frogs? Since most people are looking for more exotic frogs as pets, I have been having a bit of a hard time finding where I can buy them!

I have been looking at other tanks that people have built on here and man are they beautiful! Gives me a lot of great ideas. Once everything gets approved (which can take awhile sometimes) & I start building I will be sure to post pictures of the progress. Thanks for all your help so far and I'll probably pop in with questions as things progress!