In Finland my high school had one mandatory course on philosophy. It was really more "history of ontology" than actual philosophy. (There was maybe one instance when students had to form opinion on something, instead of memorizing what some dude had thought two thousand years ago. How do you call that philosophy?)
It was really unpopular because: "I think philosophy is stuff you kinda already know deep down. So why study it?" And now it's no longer mandatory.
Apparently analyzing a poem is important, but analyzing an argument is not.
Philosophy is a mandatory schools in Italy's lyceums.
Really, there are many reasons that I left that country, but the high school education it provides (on average) is absolute world-class when it comes to the "soft" skills.
It was really unpopular because: "I think philosophy is stuff you kinda already know deep down. So why study it?" And now it's no longer mandatory.
Apparently analyzing a poem is important, but analyzing an argument is not.