Incidentally, conservatives who think that schools should be teaching "abstinence" miss the point completely. The schools have no expertise to be teaching sex at all. We should be happy if they ever develop the competence to teach math and English, so that our children can hold their own in international tests given to children in other countries.
Schools are just one government institution that take on tasks for which they have no expertise or even competence.
Congress is the most egregious example. In the course of any given year, Congress votes on taxes, medical care, military spending, foreign aid, agriculture, labor, international trade, airlines, housing, insurance, courts, natural resources, and much more.
There are professionals who have spent their entire adult lives specializing in just one of these fields. They idea that Congress can be competent in all these areas simultaneously is staggering. Yet, far from pulling back-- as banks or other private enterprises must, if they don't want to be ruined financially by operating beyond the range of their competence-- Congress is constantly expanding further into more fields.
Having spent years ruining the housing markets with their interference, leading to a housing meltdown that has taken the whole economy down with it, politicians have now moved on into micro-managing automobile companies and medical care.
They are not going to stop unless they get stopped. And that is not going to happen until the voters recognize the fact that political rhetoric is no substitute for competence.