Sunfire, my Dad was the same way. We were supposed to end up living on the West Coast, but ended up only making it halfway ;-) Since we were always "moving" to Vancouver, my parents never bought a house. The longest I lived in any one place was five years. I just moved last year as well, into my own house with my fiance. Needless to say, I'm staying put for a very long time!
In regards to school, I attended 5. I managed to finish all three years of junior high at the same place. When my family moved to where we live now, I had to do Grade 12 at a new school with a bad rep. It was pretty miserable because I wasn't like the other kids :-D. I ended up going to my old school's high school grad instead of my own. Ten years later, I don't regret not going to my own grad :-)