Did you enjoy elementary school? That's where people go from ages 4-11 in the US.
I can honestly say that I did. It's called primary school in the UK
It's crazy how many exist. Just in 2001, there were 92,858 elementary schools in the US!
Wow! That is a lot of schools. Just makes you wonder how they would name them. 
I wonder that too. But it makes sense as 3.5 million kids attend elementary schools every year.