K-12 refers to the educational system that encompasses kindergarten through 12th grade. This system is designed to provide a comprehensive education for children and teenagers, typically from ages 5 to 18. K-12 education is offered in public, private, and charter schools, and it aims to prepare students for higher education or the workforce. In many countries, including the United States, K-12 education is divided into three main levels: elementary school, middle school, and high school. Each level focuses on different subjects and skills, ensuring that students develop a well-rounded foundation in areas such as math, science, language arts, and social studies.