My eldest is in YR1 and only 108cm, in a class of thirty he is one of the smallest and about the same height as about five others. This is to be expected as I at 5ft1 and DH is 5ft7 but what puzzles me is that a few of the other children have parents the same height but the children are massive to my eyes and must be 15cm taller. Can short parents have tall children (as adults) or do some children stop growing earlier than others? Just a bit worried that my DS is going to end up at 5ft nothing or similar.