I found this on Quora. What else is there?
- The ability to listen. No one teaches you how to listen. You learn it the hard way.
- How to have sex (make love), you learn it from third parties that teach you rubbish. Sex is a leading cause of marriage break down.
- How to select the right partner. Your life partner will determine 90% of the time the quality of the life you live.
- How to make money, the school only teaches you how to make money for businesses, so to make money, you have to teach yourself how to start a business.
- How to fail honorably. No one teaches you how to fail. Every billionaire failed at least 5 times, before finding success and I mean major failures, like when Mark Zuckerberg lost 4 billion dollars in a day. How many of you will almost commit suicide if you lost 0.5 percent of that?
- How to be an adult, we all learn it the hard way.
- How to live without focusing on material things, or being dependent on them.
- How to meditate, you decide to learn it yourself.
- Self-defense should be taught more often in school. It would stop needless wastes of life during robbery attacks.
- How to laugh death in the face, and live life as a full human unafraid of the challenges of the world, as nothing is as scary as the fear of death and if we can overcome death, we can overcome all other challenges. In more apt terms, they should teach more people how to put death in their pockets.