Can't find a link to substantiate, but I heard a science teacher, who won some kind of award, on Wisconsin Public Radio describing how he brought in a dead cow for a parking lot dissection for a HS bio class. Instead of doing it for one class, the whole school rotated through as the cow was being dismantled. I believe it was in Superior, WI...a bit more blue collar and "up north" than many schools.
And silly me, I've dragged road kill back into the woods to let it rot, get eatern, etc. The students all seemed to handle it just fine. Great teaching tool.
Meat, it's just something on the shelf