There is some controversy about BMI vs Height and Weight when it comes to children's growth. I am not going to get into that. It is a topic parents need to work out with their pediatrician. What is important is having a relationship with your child(rens) doctor.
Below is an article from WebMD.
More Self-Control as a Child, Lower BMI as Adult?
Are Kids Who Can Resist Temptation Less Likely to Be Overweight Adults? (click title to entry - thank you)
The charts on this page are growth charts, They are very different. The one on top is a girls growth chart with height and weight percentiles. The one at the bottom is a boy's growth chart in BMI (Body Mass Index). Pediatricians use these as a tool. They can check on the growth of the child in relation to NORMALS. When a child strays from normals, it may be an indicator of problems within the child's metabolism or habits that need to be modified to insure a healthy adult emerges from the childhood.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDt7aUv5es2clTW0P5ui8rd3ECSyL3fbspZ3J4es7bXrm5Dkoo0K4yG-GK97pOT6rpanWEbio7yP5C9LRx5HOGwQYxF4ARJh1En0HPN9gFqWhNn6ZogpCtL7uM3KL08HJPdu46/s400/growthchart_example1.gif)