I'm starting an after school auto program for middle school students...any ideas?

When I went to vocational school, they had some local Junk Yards donate different rearends from the various auto makers. Chrysler Ford, etc.. And our shop teacher let us tear each one down and put it back together in groups. Then we all had to learn how to do brakes. Everything from doing wheel cylinder rebuilds to cleaning parts and painting. It got to the point where we started timing each other on how fast we could do a complete put together of the pins, springs, adjusters, and shoes.. To this day brakes are still a piece of cake... (sorry I digress..) But I would talk to some local Junk/Salvage yards and see if they will donate.. It will save alot of money, and show everyone nothings ever clean, and to work on a vehicle your gonna get dirty it's just part of the job..