Is 4' 5 short for a 11 year old?

Yes, 4'5" is generally considered short for an 11-year-old. The average height for an 11-year-old boy is about 4'11" to 5'1", while for an 11-year-old girl, it is approximately 4'10" to 5'2". However, height can vary significantly due to genetics and individual growth patterns, so it's important to consider these factors as well.