Elementary School, Primary School, Grade School
noun
You've seen 学校 from a couple levels ago. Now we're adding a small to it. What is a "small school"? That's a school for small people, making it an elementary school.
しょうがっこう
The reading is the regular on'yomi reading of 小 plus the vocab word 学校 that you've seen previously. Combine these two things for the reading of 小学校.
私は小学校の先生です。
I am an elementary school teacher.
この町の小学校には、外国生まれの生徒もたくさんいますよ。
There are many foreign-born students in the elementary school in this town.
小学校の子どもたちに、絵本をよむボランティアの会に入ってます。
I am in a volunteer club that reads picture books to elementary school children.
小学校の時から、君のこと、ずっと気になっていたんだ。
I've been interested in you since we were in elementary school.