What is the average 100 yard dash for a high school freshman boy?

"about 13 seconds"

Yeah right; You're doing amazing if you make 15/16 seconds. The average times for

Grade 7 are 14/15seconds. Grade 8 are 13/15seconds. (Depending on your fitness)

My son ran 12.37 in his first track meet in 6th grade this year but he was beating all of the 7th graders. I would say that an average time for most 6th grade track runners is aroud 14 seconds. They all mature at different times.