What is the average height to start and end puberty? And is it normal for a stage 3 boy to be around 5'5?
The average adult height of men is 5'9". If we assume that age 11 is the average start of puberty, then the average height at the start of puberty is 4'8.5" according to the CDC Growth Charts. If we assume that stage 3 starts at the age of 13.5, which is the average, then the average height is 5'2".