Absolutely!
My son's girlfriend was a math teacher in Anne Arundel County, Maryland up until the end of last school year. She couldn't do it anymore. Administration wasn't supportive, the parents that were involved in their kids education, the majority were not supportive-some were even combative - many of the kids themselves were disrespectful and rude. There was no discipline and politics handed down from the admin & teachers union filtered down into the classrooms. Yes, of course there are schools systems where it is not this bad, but it was there and those are her words verbatim.
The days of school are long behind us, and I'm glad to say it. I do not recall there being a lot of teachers leaving or problems with retention when our boys were in school-we moved from public to private when they started High School, and don't recall much issues there either. With that being said, in our (rather rural) area, I think they've managed to hold on to enough teachers. We have two elementary, one middle & one high school in the county we used to live in, and in the neighboring one where we live now (physically bigger county, still rather rural for the most part) there is 4 middle schools & 2 high schools. I think they are hanging in there with teachers, too - but in both counties there is a shortage of bus drivers, which I think it common in many places.