First grade意思

"First grade" is an educational term used in the United States and some other countries that follow a similar educational system. It refers to the first year of formal education in elementary school. In the U.S., children typically start first grade at the age of 6 and complete it at the age of 7. The curriculum usually includes basic subjects such as reading, writing, arithmetic, science, social studies, and sometimes music, art, and physical education.