K–12, from kindergarten to 12th grade, is an English language expression that indicates the range of years of publicly supported primary and secondary education found in the United States and Canada, which is similar to publicly supported school grades before tertiary education in several other countries, such as Afghanistan, Australia, Canada, China, Ecuador, Egypt, India, Iran, the Philippines, South Korea, and Turkey. K–12 refers to the American system which affords authority to local intersectional "districts" which may be specific to a municipality, county, or several regions, depending on population and proximity.