arlington has great schools, there are tons of apartment buildings along the orange line metro.

you don't say your budget, but friends of mine used to live here, they loved it, and it's a great location:
http://www.condo1.com/bld-detail-mls.asp?BldID=14&AreaID=7

We are moving here and looking to rent in a really good apartment building that is in a great school district. Can anyone recommend such a building: looking for one with a gym and pool, not too far from DC. I'm thinking about Arlington or Alexandria, but I don't know the area that well.