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 eras are the United States, Australia and Australia.
Extended data:
K 12 is the abbreviation of primary and secondary education in North America. This phrase is the abbreviation of kindergarten to 12 grade, and it is the first and last grade of free education in the United States and Canada.
Education is also a process of teaching and educating people, which can teach others the most objective understanding, and then gain their own values in their own life experience. Education is a practical activity to improve people's comprehensive quality.
References:
K 12_ Baidu Encyclopedia
Education _ Baidu Encyclopedia