Spike, Spike.. such simple statements are typical of nationalists, who lack the intellectual capability of actually reading more than a few sentences.
As we already established, you've taken an isolated statement from the matrix without context. As anyone actually familiar with education knows, you need to read the whole document to understand the matrix, and the document makes it clear that it should be age-adjusted.
A little knowledge is a dangerous thing, and in this case, you're obviously falsely representing what the document actually says.
Still, one has to wonder why you choose to live in Western Europe if it's so terrible ;)
This only helps Pis.
The opposite. PiS tend to do worse when they get involved in social politics, because it pushes them further to the right and away from the key electorate. It also pushes them into the territory of the nationalists, which means that the nationalists lose support as they can't compete against a much larger political organisation. It also means they end up wasting time and energy on fringe politics, leaving the ground clear for the main opposition - which is what they don't want to do.
The other problem, of course, is that PiS have very little credibility on this issue after the way they treated disabled children.