Seriously, my high school science teacher would have had a fit about eating anything in the classroom. It just was not done in the lab. Not safe.
But we still did a decent amount of really cool projects, none of which involved food. Made hot air balloons, vinegar and baking soda boats made from soda bottles, and we always had a competition of who could sculpt the best mole out of a mole of aluminum foil on mole day. We did a lot of cool experiments too, which very rarely involved food, and when they did, it was never eaten.
Of course, I think that my science teacher was amazing in most ways. I went to a tiny school, and she taught seven different classes a day, from 7th grade science through all of the high school classes. She taught so many science classes that we had to offer physics and chemistry in alternating years because there wasn't enough time in her day to do both.