Ninth grade, freshman year, or grade 9 is the ninth post-kindergarten year of school education in some school systems. Ninth grade is often the first school year of high school in the United States, or the last year of middle/junior high school. Students are usually 14--15 years old. In the United States, it is often called Freshman year. In England and Wales, the equivalent educational year is Year Ten. In Scotland the equivalent educational year is Third Year or S3, as this is the third year of compulsory secondary schooling.
Based on the above text, what's the best answer to this question: can you be 15 in the 9th grade?
yes