Ive been trying to figure out how many is in the pool for a while. As far as I know most of the guys from the interviews (that got pool letters) in Sept have been swimming. I estimate its around 5 guys from my date (Sept 15th) are in the pool with 1 guy getting a direct class date. Its pretty much impossible to estimate though. I wish HR was a little more open with their information. Plus, if you are ranked last in the pool you could be pushed down for a long long time depending on how often they interview vs. run classes.