It must be the hot topic for California schools. That is what we started this school off with as well.
Was watching season 4 of The Wire last night, in which is featured the Baltimore education system. Endless, mind numbingly dumb, group-think inducing indoctrinations of the "I Am Lovable And Capable" variety.
We all remember those, don't we?
In my school, meetings to integrate the school's big question into every facet of our teaching and learning. Our science meeting opened with a video montage of Aushwitz, and the and the exortation to find links between secrecy and power with our program.
Gaaahhh! (!1!1!)
Nice to hear you back Polski.
We have started the ideas of PLC's here too. Sounds like our admin all went to the same conference.
I did a lot of reading about PLC's and I think that if they are done correct, they are obvious essential parts to teaching. But I think that much of it is worded like a fad that has already been done before.
I have just started my sixth year of teaching in the UK and have already lost count of the numbers of wasted hours and days spent attending meetings and development forumes. Not once - NEVER! - have I picked up something that is remotely useful to me once I shut my door and face the students.
We come back from summer full of enthusiasm. They try to meeting this out of us. Thankfully we survive and manage to forget all they try to pound into our brains. 
We started with it too...no word on what's to be done, yet.
What? Your meetings aren't useful? Not productive? Say it ain't so!
We did PLC for about 5 years. Then, we were told we couldn't do them anymore and had to switch to the canned High Schools That Work, which has Focus Teams instead of PLCs. Oh yes. Many times, teachers meet for the sake of meeting. We collect data. We look at the data. We compile data to present to the rest of the staff. We try to make change. They tell us to go for it. We go to upper admin. They tell us no. We start again.
To answer your question, no.
I'm in K-5, but we actually seem to implement our PLCs in a fairly helpful way. Grade-level meetings do suck up our about 3 hours of our 4.5 hours of planning time each week, but during those three hours we get our math and literacy plans outlined as a grade level, and do other planning and data-analysis that needs to be done.
Commenting by HaloScan
