Average height & weight

[sherrardk]

Where can I find information about how tall and how heavy children should be at different ages.

[cheaton]

Try this site
http://www.kidsgrowth.com/resources/articledet ail.cfm?id=304

[mimififi]

if you have children of your own, you can also look it up in the growth charts in the red development book. There are different centiles, but it will give you the expected height/weight range for each age group and in between.