In a recent case, the California Supreme Court affirmed a 1955 law that requires teachers to have proper credentials, even if they're homeschooling their own children. Some conservatives are up in arms. But it's important for conservatives to locate their criticism properly.
As far as I can tell, this was a judicially conservative decision. The law in California is that teaching requires certain qualifications. The only question was whether you can find a right in the Constitution to homeschooling, and they concluded not, which is actually a more judicially conservative position. See Eugene Volokh for more details.
Now I'm open to a judicially conservative argument that this case was wrongly decided, but I've been seeing people upset merely because of its being a bad policy decision. Well, don't complain to the court. Complain to the people who wrote the law to begin with (except they're probably dead), and seek to get the law changed. That's the normal process for this kind of thing, and it's not conservative to expect a court to find new rights in the Constitution that conservatives would prefer to have constitutionally guaranteed. This is a case of conservatives expecting judges to enact their policy preferences, which is the very thing conservatives usually complain about and call judicial activism when they see liberals doing the same thing.