12th grade 

The last year of high school
senioritis

"May is going to the 12th grade this year"

12th grade by nothingelsematters September 8, 2008

12th grader 

12 graders are savage but all they really care about is sex and drugs.but even though they are cool the next year they will be struggling to find a damn job poor them🖕🏼

Wow you are turning to suck a 12th grader

12th grader by Your dear nigga March 7, 2017