This "manifesto" should be considered in the context of the recent case in Germany forbidding parents from homeschooling their children for religious reasons.
This manifesto should also be considered in the larger international context of how the left thinks. Like the Armed Forces, the left regards the school system as a giant Skinner Box in which it's subjects should be placed, conditioned with the right stimuli and shaped into a faithful subjects of the collective.
Take a look at how “directives” work in the EU and that’ll answer a lot. Anything that says “opt out” on it will mean you get forced in later. Those laws called “regulations” are incumbent upon everyone to obey or else (the “or else” being mostly financial/economical right now, so you can imagine what would follow if the EUSSR ever got itself a military).