You know the old Dewey-ism: "Children learn what they DO"? Has it ever occurred to educational theorists that the same wisdom applies to teachers? Those of us who are actually IN classrooms also manage to learn from what we do! Are we ever consulted re what works and what's relevant? Not often. Instead we are sent out for "professional development" - ie to listen to people who have very limited classroom experience, but who want to enlighten us. Small wonder teachers often come away shaking their heads.
Now, I have to admit that I've picked up a few really good ideas from these "experts". But. I've learned at least ten times as much just by kicking ideas around with colleagues.
And colleagues have never forced me to take sudden abrupt turns just because some enthusiastic politician or empire-builder (or both) has had a change of heart about what should be happening in every classroom.
Parents sure did make a huge error when they entrusted their children's education to bureaucrats...