In the whole scheme of lies, this isn't an important one, but it is a good example of how schools mislead.

I grew up mostly in Florida.  Throughout my schooling, I was told repeatedly "The white men killed off the buffalo."  I was not told buffalo were extinct, but what I heard from the mantra "The white men killed off the buffalo." was that buffalo were extinct.  (I suspect that many of the teachers that repeated this line also thought buffalo were extinct because we don't have buffalo roaming around Florida)  Imagine my surprise when I went on vacation in Colorado and driving along I-70, on the North side, I saw a huge herd of more than 100 buffalo.  It seemed like a miracle.

Since that day I have learned that so many things,  I was taught, were lies.  One of the best things about homeschooling my kids was unlearning the lies I was taught and learning the truth.