I'm also from Scandinavia and I just don't agree with you. What you're saying doesn't line up with my own experiences, nor with my understanding of the statistics.
In general, it seems like you are attributing all academic performance to some innate "intelligence" in the singular. This is just a bad assumption. There are many factors behind how well you do in school, and most of them are quite obviously social. That doesn't mean that your parents academic performance doesn't influence your, but there's no basis for claiming that it's genetic. We can help people do better, and we have done so. Of course, what we're doing now isn't perfect, but that doesn't mean it's not worth it.
In general, it seems like you are attributing all academic performance to some innate "intelligence" in the singular. This is just a bad assumption. There are many factors behind how well you do in school, and most of them are quite obviously social. That doesn't mean that your parents academic performance doesn't influence your, but there's no basis for claiming that it's genetic. We can help people do better, and we have done so. Of course, what we're doing now isn't perfect, but that doesn't mean it's not worth it.