K 12 or K- 12 is the abbreviation from kindergarten to twelfth grade, which means from kindergarten (generally 5-6 years old) to twelfth grade (generally 17- 18 years old).
These two grades are the first and last grades of free education in the United States, Australia, Britain and Canada, and K- 12 is the international collective name for basic education. K 12 is mainly adopted by the United States, Canada and other North American countries.
K 12 The whole system from kindergarten to university can be summarized as follows:
1, K- 12: diploma from kindergarten to high school (from kindergarten to high school graduation).
2.k- 14: kindergarten to junior college (from kindergarten to junior college).
3.k- 16: kindergarten to undergraduate (from kindergarten to undergraduate).
4.k- 18: kindergarten to master (kindergarten to master).
5. K–20: Kindergarten to postgraduate degree (kindergarten to doctoral degree).