It's going to depend on your definition of "intown." Morningside Elementary is a highly sought after school. It serves Morningside, Virginia-Highland, and Midtown. And it feeds into Inman Middle School and Grady High School. Mary Lin Elementary is also very popular. It's located in Candler Park and is much smaller than Morningside (which also has a bit of a reputation as a test factory). Interestingly, Toomer Elementary (in Kirkwood) is making tremendous strides. They have some really unique programs (like Chinese language for elementary students) and have excellent test scores.
The City of Decatur has an excellent school system and has just been given charter system status so expect even more innovation there over the upcoming years. They focus on expeditionary learning.
Oak Grove Elementary in DeKalb county consistently tests well but it doesn't really count as "intown" to most people. It's located between Emory University and Northlake Mall.
Likewise, Sarah Smith is well respected, but it's not so much "intown" as "north Buckhead" so, depending on where you work, it could leave you with a pretty hefty commute in hideous traffic.
To see a ranking of public schools, go to the Georgia Public Policy Foundation web site:
For actual reviews of schools, greatschools.com is helpful