You probably want to set up your own clubs where people can get together and just build with components, build addons to raspberry pis, experiment with arduino etc. There is a repair cafe type movement too, so link up with them.
We are going to try and do the latter at the STEM group I run, partly as we were also given a huge stack of components so they could benefit from access to those too.
Schools don't always have the funds or expertise to teach stuff that is way beyond the curriculum, aiming at adults is usually better, parents can bring their kids of course, unless you want to also be looking after kids as well as doing your own projects.