Introduce a new subject to the primary school curriculum that teaches kids how to think independently. Teach them about cognitive biases, logical fallacies, how to find credible sources and perform research, etc.
Not being able to make sense of the world has become a pressing problem of society. Everyone knows some people that seem to be totally wrong about the world. Educating young people about thinking for themselves, verifying the information, and accepting the possibility that the people around them might be wrong could help alleviate this problem.
A new subject would be introduced into primary education (all years) that teaches kids about topics like:
If there is no room for a new subject in the curriculum, the time can be taken from Arts and/or Geography. Being able to think for yourself is probably more important.