What I've learned from the Internet: Self defense techniques, art appreciation, dealing with basic life situations, politics, the economy, biology facts, to be open-minded and accepting of everyone (no matter the shape, form, gender, race, sexuality, religion, social status) the difference between gray and grey, the effect one simple, little word can have on people both good and bad, how to deal with depression, anxiety, and suicidal feelings, some of the theories of our existence, why the plague didn't effect Poland, what to do if I get buried alive, etc.
What I've learned in school: How to use a calculator to find the side of a triangle