How can I convince my school to let us do blood typing?

So last semester my bio teacher did blood typing with his Biology cl and got in trouble for it because, "it is a hazard to the students of the school". So this semester we were learning about blood but aren't allowed to do blood typing because it is a "a bodily fluid that can harm others and increases the risk of aids and other diseases". Seriously, a bodily fluid in a human bio cl! Who could possibly imagine that? Anyway, this really irritated me as I was looking forward to doing blood typing but we aren't allowed to do it. I think it is crazy. We weren't allowed to look at spit under a microscope because it contains possible hazardous germs. My school won't let us do anything in biology and my argument is that you can learn the theory of bio, but to actually experiance it is totally different. We are allowed to watch movies, or do a fake simulation with fake blood, but nothing with real blood, even if it's the teachers! We haven't done any labs this year excep fake simulations. It's a bio cl!