<P> The twelfth grade is the twelfth school year after kindergarten . It is also the last year of compulsory secondary education , or `` high school '' . Students often enter the grade as 17 - and 18 - year - olds and graduate as mostly 17 or 18 - year - olds . Twelfth graders are referred to as Seniors . </P>
<P> The twelfth grade is the twelfth school year after kindergarten . It is also the last year of compulsory secondary education , or `` high school '' . Students often enter the grade as 17 - and 18 - year - olds and graduate as mostly 17 or 18 - year - olds . Twelfth graders are referred to as Seniors . </P>
what age do students graduate high school in usa
what age do students graduate high school in usa
mostly 17 or 18 - year - olds
mostly 17 or 18 - year - olds