Elementar a. : Elementary.

Example:
What companies make textbooks for Elementar levels for math, science, social studies and reading?

Taxonomy
Elementary school, schools, primary education, Primary school, education, free encyclopedia, United States, stage, preferred term, first stage, pupils, middle school, classes, environmental science, languages, search, United Kingdom, schools in England.

Defination from the web:
Elementary school is the preferred term in some countries, particularly those in North America. ... Elementary school was formerly the name given to publicly funded schools in England which provided a basic standard of education for working ...