My 10 year old grandson is just 4 feet 4 inches tall and is joint shortest boy in his Year 5 class. He is very athletic, plays football at quite a high level and is academically very able.
His older brother is right on the 50th centipede for his age. Their dad is 5 feet 8. .
Do I need to worry? I hope he has a growth spurt before he goes to High School.