I don't know why schools see Wikipedia as a cold, death-loving, heartless, idiotic website. I have only seen one Wikipedia page with the wrong info in my entire life, and the next day it was fixed.
It is 99% of the time, yes there are some idiotic trolls that like to change stuff but it is normally corrected quickly so you generally don't see it, there are lots of people that write reliable stuff for Wikipedia, also a lot of pages are protected anyway. The reasons school's don't like you using it (well my school at least) is because lazy people will often just copy and paste the whole page and say they have 'learned' it while the rest of us are typing up documents in our own words.
As to quote a joke I once saw, This is my high school graduation speech. "I would like to thank Google, Wikipedia, and whoever invented Copy and Paste."
