The AP Computer Science AB exam was killed off last year so there's less incentive for linked lists, BigO, binary search trees, to be taught at the high school. Truth is, if there were no AP exam, most Principals would kill off those programs.
More interesting is that the IB dossier views CS so important that it is one of the six pillars of the IB diploma. Funny how the rest of the planet view CS more important than the USA (AP).
I recently had a former high principal ask me if anyone programmed computers anymore?