I think part of this issue is what is important to an individual. It is not about what schools do not teach. Let me give a specific example.
I occasionally ask my son how he got to a particular location when we meet somewhere. This happened recently when he and his family met us all at our daughter's home. He says he does not know; he went where his App sent him. It is NOT IMPORTANT to him. To me, having grown up without GPS and related Apps, I like to know where I go and how I got there. I use a map in my head and often look at maps (accessed online, btw) before I travel. That is how my brain works. His brain does not work that way; he does not need to use brain cells for such things as his brain is adapted to this technology. (btw: He manages a website for a good size company, so he does use his brain.) His brain is geared toward this type of technology.
I interact with 5th graders at my school and one "showed off" today and named all the US Presidents in order from Washington to Trump. When he was done, I congratulated him, then asked him to name #17. He got that right, too. I will (if the opportunity arises) ask a student in the same class a few geography questions, using a globe to find a country on it. I am curious if such knowledge extends to geography. Are you smarter than a fifth grader?
Most folks these days use some computer technology to find information, including the location of a geographic place. I do think there is value to knowing things and NOT relying constantly on computers and electronic technology. My father-in-law knew roads in the area and could navigate from point A to point B in the area with little effort, even into his 80s. He did not use such technology.
I read years ago that technology makes us human less intelligent. There may be some truth to that, BUT young people today know how to USE technology. Ask a baby boomer a technology question, how to do or fix something electronically; we struggle. Our children do that in mere seconds what may take me 30 minutes. Their brains use the technology and use it well. We have different skill sets. I think knowledge of both is important, doing things with and without technology.
What knowledge is important to you?
ConfederateSS.out!(The Blue and Silver Rebellion)... 
