▁to ▁determine ▁qual ification ▁for ▁en list ment ▁in ▁the ▁United ▁States ▁Ar med ▁Forces . ▁It ▁is ▁often ▁offered ▁to ▁U . S . ▁high ▁school ▁students ▁when ▁they ▁are ▁in ▁the ▁ 1 0 th , ▁ 1 1 th ▁and ▁ 1 2 th ▁grade , ▁though ▁anyone ▁el ig ible ▁for ▁en list ment ▁may ▁take ▁it . ▁ ▁History ▁ ▁The ▁AS V AB ▁was ▁first ▁introduced ▁in ▁ 1 9 6 8 ▁and ▁was ▁adopted ▁by ▁all ▁branches ▁of ▁the ▁military ▁in ▁ 1 9 7 6 . ▁It ▁under w ent ▁a ▁major ▁revision ▁in ▁ 2 0 0 2 . ▁In ▁ 2 0 0 4 , ▁the ▁test ' s ▁percent ile ▁rank ▁scoring ▁system ▁was ▁ren ormal ized , ▁to ▁ensure ▁that ▁a ▁score ▁of ▁ 5 0 % ▁really ▁did ▁represent ▁doing ▁better ▁than ▁exactly ▁ 5 0 % ▁of ▁the ▁test ▁tak ers . ▁ ▁C ategories ▁ ▁Current ▁ ▁The ▁AS V AB ▁currently ▁contains ▁ 9 ▁sections ▁( except ▁the ▁written ▁test , ▁which ▁contains ▁ 8 ▁sections ). ▁The ▁duration ▁of ▁each ▁test ▁var ies ▁from ▁as ▁low ▁as ▁ten ▁minutes ▁up ▁to ▁ 3 6 ▁minutes ▁for ▁Ar ithmetic ▁Re ason ing ; ▁the ▁entire ▁AS V AB ▁is ▁three ▁hours ▁long . ▁The ▁test ▁is ▁typically ▁admin ister ed ▁in ▁a ▁computer ized ▁format ▁at ▁Military ▁En tr ance ▁Process ing ▁St ations , ▁known ▁as ▁ME PS , ▁or ▁at ▁a ▁satellite ▁location ▁called ▁a