I assume you are talking about North America here, because that is certainly not the case everywhere
Unlike modern education, which puts a massive emphasis on teaching how to do menial, useless things before going the sensible route [e.g. I remember vividly how we were tortured by doing table of values calculations in maths for what felt like weeks before we were allowed to use derivatives. I loved maths. Until that point. Then I hated the course (not the subject) with a passion.
Lo and behold, I enter university, and the first thing we do in Mathematics 101 is 'let's forget everything we have learned, we're going to start from the beginning'. Joy.]
I want to stress the point: Smartphones exist (and have existed for 15 years - a more modern 'scary new tech' would probably be LLMs). Banning these things from school will only keep teachers happy because they can keep their teaching methods from the 1890s alive for some more time, instead of using what is available to get kids educated better.
- Lessons about road safety (causes of accidents, number of deaths, etc...)
- In elementary school, navigating the roads as a pedestrian or cyclist. Including going outside and crossing roads.
- In secondary school, basic information about traffic law, road signs, and information related to light motor vehicles (mopeds, ...)
- Though I didn't do it personally, some school had a class at a practice track, using pedal cars to learn about things like right of way
So while we didn't do actual driving, probably for economic and liability reasons, it is definitely part of the curriculum.
I'm actually of the option we should have a smartphone category/setup at the same positioning as bikes are to cars, it would even benefit adults the same way not everyone wants a car.
So social things, like communicating with people, happens on social apps.
Kids also would be better with map apps, GPS, electronic payments and auto-charging bus/train pass if you expect them to have any independence.
All in all, kids should be the last ones IMHO to get real dumb phones. We might as well give them pagers if that's what we're going for.