What grade should you be in if your 15?

Answer 1

a 15 year old should normally be either a freshman or a sophomore. You're supposed to turn 15 sometime during freshman year, so then you start sophomore year at 15 too, and later turn 16. A few states allow some 15 year olds to be juniors, if they have unusually late cutoff dates for starting school (a few states don't even require a child to be 5 until November or December to be able to start kindergarten, so if you start at 4, that means you'll still be 15 when you're starting junior year of high school).

Answer 2

9th or 10th grade. You'd normally have your 15th birthday sometime during 9th grade and then begin your 10th grade year at 15. In some states, it is possible to be 15 at the beginning of 11th grade, if you have a fall birthday and your state has an unusually late cutoff date for starting school (if they allowed you to start kindergarten at age 4 rather than 5, then you will still be 15 when you start 11th grade).