10-12 years old.  Kids start kindergarten around age 5, proceed from grades 1 through 8, then 4 years of high school, then 4 or more years of college to a baccalaureate degree, or on to postgraduate work.  Some American school districts now seem to divide grades 1-8 between
"elementary school" (K-4) and "middle school" (grades 5-8), but that wasn't my experience.

Sergio Riolo wrote:

> Reading about young people visiting American museums, I've come through
> "5th or 6th grade students". Can anyone tell me how old is people
> attending these school grades?
> Many thanks,
>
> Sergio Riolo
> [log in to unmask]
>
> Vale Maria Cristina di Savoia, 2-C
> 80122 Napoli - Italy
> Tel. e fax: +039 081 660775
>