what is the average height for a sixth grader
Â· just now. Report Abuse. There were many tall people in my grade when i was in 6th grade. I was 5 feet 2 inches and there was one boy who was 5 feet 10 and yet again there were a few who were as little at 3 feet 11 inches. the average would be in between 4 feet 2 inches to 5 feet 2 inches. But Be happy the way you are. Your body will have plenty time to grow taller.