In the United States, 6th graders are typically 11-12 years old. This age range is also consistent with international schools such as the American School of Milan, which follows a similar age requirement for 6th grade students. Stamford American International School in Singapore also lists the age range for 6th graders as 11-12 years old. Middle schools in the US usually cover grades 6 through 8, with 6th grade being the first or second grade of middle school.