We put the racket on the serve hash mark. That is the starting point. The balls are put in the back corners and the service box corners of the back of the service boxes. So when on the baseline there are balls on either side and three in the front view. I know when my son went to the USTA CTC they timed all of the kids. My friend is getting the USTA norms for me. My 9 year old is 5ft tall and 90lbs. I know that is really large for his age. I am sure that affects his time at this age. I just think this is a good comparative speed test. He has a friend that is really fast on the court and very highly ranked in the same age group. I will ask his mom what his time is as well and post here.
Wilson 6.1 95s