What is the matter with the state/national tournament series we have now?

What is the definition of:

Diaper Age Group State/Nationals
Preschool - Just out of Diapers State/Nationals
Elementary - K-5th grade State/Nationals
Middle School - 6th grade - 8th grade State/Nationals
High School - 9th - 12th State/Nationals Cadet and Junior

USA Wrestling Age Groups and Weights Below

These are the age groups and weights they are using at USA Wrestling Folk Style Nationals - this is our national governing body

http://content.themat.com/forms/Weights.pdf

How low should we go? How young?