Yeah same here for high schools but our high schools are your middle schools, sort of. Getting into college is very similar to uni except you don't move to go to college, you find one in your area. They have lots of buses that go all over the place. Off the top of my head there's 5 good ones I could have gone to just by catching a bus.
In my district, there are a few different Elementary Schools, and the one I went to is basically one building that includes 3 sections, each for Elementary, Middle, and High School.