Girls develop earlier than boys. Some girls begin to develop in primary school, while boys' universities are still developing. This is the difference between boys and girls.
And now I eat more hormones, and my overall development level is earlier than ours. I remember when I was in primary school, there were not so big differences between boys and girls, but there were several differences. But it is still rare for girls to appear on the news one head taller than boys.
Some boys were not particularly tall when they were young, and they began to grow rapidly in junior high school and high school, and they could grow to more than 180 cm. When girls reach puberty, they often grow 10 cm a year, and then they don't grow tall, and boys may increase. However, although girls are taller than boys, boys have some natural advantages that girls just don't have, such as strength, which boys really hold firmly. This is not a tug of war. The strength of boys proves that they are still strong even if they are short.
By the second half of junior high school, especially after senior high school, boys are climbing, and many girls are not that long.
In fact, not only the height, but also the academic performance. In primary school, girls' academic performance is generally better than that of boys. But after the third grade, the advantages of boys appeared, and many girls couldn't catch up with their grades. This is a normal phenomenon!
Conclusion: Before 12 years old, girls develop earlier than boys. Boys will increase significantly after entering junior high school. Generally, when graduating from junior high school, they will obviously surpass girls, so parents don't have to worry too much. What parents need to do is to keep up with nutrition at an appropriate age.