What is considered short for a fifteen year old boy?

There is no definitive number that constitutes short for a 15-year-old boy, as height varies significantly among individuals at this age. However, on average, the height of a 15-year-old boy in the United States is around 5 feet 4 inches (163 cm). Therefore, a boy who is significantly below this average may be considered short. Other factors, such as genetics, nutrition, and overall health, can also influence height.