making schooling not about actually useful information and skills, and maybe focused based on aptitude early on

this might depend on the country, with some being better, or a lot better than others

for example, in school, my teachers taught me useless trivia about Historical figures (some of which I later learned could be fictitious), I was also "taught" how to use sandpaper on an ornamental piece of wood (instead of learning how to use the tools to cut wood to make something useful, like a chair or a table)

wasting time on those useless things, instead of first aid, handling money (basic financial information, like savings accounts, how interests can work for you, or agains you, loans, etc.), laws (as in, what's legal, and illegal, and why), knowledge that should be universal, like the declaration of human rights

I also think shielding children from "bad language", and the knowledge of sex, and death does them a disservice, but I don't have an alternative that could be at least seen as reasonable

also, religion, at least the way it's "introduced" on chilren (forced on them, really)