The school age group generally refers to children who are between the ages of 6 and 18 years old, and who are typically enrolled in formal education in a school setting. However, the specific age range can vary depending on the country and educational system. In some countries, children may start school at the age of 4 or 5, while in others, they may start at the age of 7 or 8. Additionally, some educational systems may extend beyond the age of 18, with students attending university or other forms of higher education.