Well, I only see the obvious replies post so far(avoid Great Mills blah blah blah)...
Honestly, Would I send my children to GM? Yes. Do you wanna know why?because if you teach your kids right they will not fall in with the wrong crowd so all of the drama and fighting that occurs at all of the schools in this area would not be an issue. I graduated from Great Mills and I will be the first to admit that its not the greatest but neither are any of the others Leonardtown,Ryken, or Chopticon. A majority of my graduating class did go on to college or join the military. It all boils down to the character of your children either they are going to settle down and do their work, join clubs, play sports(you know all the things that you are supposed to do in high school) or they are gonna go wild --- and they can go wild in any school.
Middle schools - I went to Spring Ridge Would I send my kids there probably not--too much drama ...I don't like the way the staff does things
As far as Elem. Schools you mentioned Park Hall ...I live right beside it and I went there a few years --its ok. My mom works at White Marsh(in mechanicsville/charlotte hall) she seems to like the way they do things much better than her old school Carver.
Really I wouldn't want to send my kids to any school in this county--my suggestion-- Move close to Waldorf and send you kids to those schools(I know u work in St. Inigoes and thats a long commute my dad works in st Inigoes thats why we live in Park Hall) --really I mean that.