There are many things I've learned that were never taught in school, but I wish had been. Here are four biggies that to me, should have been covered.
1. Cardinal Directions: I went to suburban schools well outside of any real urban street grid, so I never learned how to tell what's east and west, and north and south by knowing the directions in relationship to the sun until about age 17. Perhaps if I'd gone to school in a big city I would have learned this quicker because cities are usually based on an equator and meridian. I think if all kids were taught this in first grade, their long range thinking might develop quicker. Failure to understand the relation of places to each other in 3 dimensional space kind of hinders your ability to make efficient use of your time.
2. Social Security Numbers: These are less for helping you, and more about protecting society from you, in case you turn out to be a freak. Big brother makes sure that everything you ever do of an economic or legal nature, is connected to your S.S.#.
3. Sex And Money: How much money a man makes/has is more important to a woman, than how much money a woman makes/has is to a man. Fortunately, this isn't as true as it used to be, but because of women's limited reproductive timeframe, and limited earning power during pregnancy, having money is still more of an expectation for men than it is for women. And because of hormones like estrogen, women are generally more attractive than men, so it's kind of like, "What are you going to do for me, in exchange for my granting you the privilege of letting you have sex with me?"
To this expectation, I say, "I don't need to spend my life being a breadwinner, because I don't view women as baby factories." And BTW, I'm all for women making equal pay for equal work. As the % of females who participate in the labor force gets closer and closer to that of males, this should become more of an historical footnote - I hope.
4. The World of Work: You are assumed to be worthless until you prove otherwise.
Obviously, these are partially matters of opinion so I couldn't really have expected school to teach me these things, except for cardinal directions which seem so fundamental to me.
But I'm curious to know what others deem to be the most important lessons, facts/data, attitudes, morals they've ever learned but were never taught in school. Hopefully we can all learn something from each other.