Why bother? Schools shouldn't be in the business of spreading green energy Propaganda. Wind turbines are expensive and ineffective. Find something more useful.
go to windmill park with a giant crain and then pick the windmill and drop it to your school.
There are many try the link below.
see your physics book
windmill
Its simple and easy to understand, best of all it really works and there is some amount of physics that goes behind a windmill, you will scratch on the electronics parts.A good unique and sense full model of physics can only be made while the maker will be careful and knows how to make a clean projected and the project mainly depends on the presentation, and if you are looking for something on physics, why don't you try a working model of a windmill?? (dc motor, wires etc). And if you want procedure then i can give that too.....! So, best of luck i hope your project will be the best.....!
clinometer
How to make a model of an energy class science project
science electronic working model
Am not telling you
A working model of a windmill is easy to construct from popsicle sticks. Simply place four popsicle sticks across each other at angles. Then put a nail through the middle of the sticks to attach them all together making the hole a little bigger than needed. Attach to a base.
Lightwave or after effects :)
by makeing it!!