Let's not forget the important stuff they don't teach you and choose to teach lies instead. For example, I had no idea who Nikola Tesla was until after high school when I learned about him through random web surfing. We were taught that Thomas Edison was some great inventor. No, he just undermined other inventors, stole their work and made them look bad. Also, we were never taught that we essentially lost at Vietnam. These are just two small examples of things they don't teach in public school that make a lot of kids look like morons later in life. Public school also teaches kids to believe everything they hear so later in life you see a lot of them who aren't able to form their own opinions about anything. I'm sure we've all had a debate with those kind of people at least once and it's frustrating.