> One thing which I really don't like here is instead of giving kids free time to experience life themselves they will add one more boring official class.
Being perpetually 'busy' and treating life as a collection of planned activities, like homework, classes, courses, workshops, appointments, etc. is something that runs deep in our entire (Western?) society, whether school-going or working age.
Mindfulness as yet another one of those activities feels uncomfortably like a band-aid solution that is dangerous precisely because it works.
It's a bit like taking aspirin to deal with headaches when really you should just stop drinking so much coffee and working so much.
I do think mindfulness can be more than that. I've experienced how beneficial it can be to make it part of life rather than just (or only) another planned activity, especially when it's a part or underpinning of a larger 'framework' (in my case I lean towards Zen Buddhism).