I am about to start working at an elementary school. I'll be working with kids 4-11 years old.
Sounds interesting, have you ever been a teacher before?
I have not but did have a lot of choices in schools to work at. There were 92,858 elementary schools in 2001.
Wow, that's a big number.  I wonder how many total students that is.
In 2009 it was estimated almost 3.5 millions students attended school
Is that number in the United States or Worldwide?
That's in the U.S. The National Center for Education Statistics was the one estimating.