Teaching what I teach (History, geography and RE) and the skills that I teach my students we teach these skills to them so they know how to apply them IRL.
For example in geography we have a unit in which students have to look through a paper and find a job (so they learn about finding employment) then they look at train/bus timetables and work out which mode of transport they would use to get them to work on time. Very helpful IRL when they leave school and gain employment!
We also roughly teach them about mortgages, we let them choose a job with a salary (out of a hat) and a family scenario (single, couple, 2 kids etc etc) then give them the sums to work out how much they could borrow (it is basic but they are 13!!) then they have to find a property suitable for their circumstance they can afford
In RE every unit has a dedicated lesson(s) on how that particular religion affects the local community and wider world!
Teaching them about Hitler always moves to the point of why democracy is so important yet can so spectacularly fail.
These are just a few examples I haven't been at work since July and am struggling to remember!!
We can't teach our kids EVERYTHING at school and kids have parents to extend and enhance their education.
But their are positive and negatives of both
State school is free education for everyone. Private and home schooling is there for a select few who are able to do it