To add to the ever-growing list... this has probably been listed already, but:
Basic critical thinking skills
We live in the Age of Information. We're bombarded by political statements, fad diets, alternative medicine, conspiracy theories and so on at every turn. Our kids
need to grow up with the skills to separate the chaff from the wheat.
How many times haven't you heard someone say something like,
homoeopathy works -- I tried it and got better afterwards.
I know this sounds condescending, but the fact that anecdotes are not evidence is one of the most elemental rules of critical thinking. It's like living in a big city and not knowing that a red light means stop and a green light means go.
Or the other ways people tend to extrapolate single incidents:
no, I won't get vaccinated, because I heard a girl died from the vaccine.
Er, 30 000 people are killed by seat belts every year, do you want those banned, too?
Or,
this one summer, in this one area, has been colder than average. Therefore, global warming is a myth.
We
need critical thinking classes in our schools.