▁and ▁H icks , ▁David ▁V . ▁( trans l ators ) ▁[ http :// books . sim on and sch uster . com / The - Em per ors - Hand book / M arc us - A ure lius / 9 7 8 0 7 4 3 2 3 3 8 3 5 / The ▁Emperor ' s ▁Hand book : ▁A ▁New ▁Trans lation ▁of ▁the ▁Med itations ] ▁Simon ▁and ▁Sch uster ▁ 2 0 0 2 . ▁ ▁Arnold ▁Hol t berg ▁( 1 9 9 3 – 2 0 1 4 ) ▁ ▁David ▁D ini ▁( 2 0 1 4 – present ) ▁ ▁Statistics ▁ ▁The ▁school ' s ▁ 8 7 7 ▁students ▁are ▁spread ▁across ▁first ▁through ▁tw elf th ▁grade , ▁with ▁ 3 9 2 ▁in ▁the ▁Upper ▁School , ▁ 3 3 5 ▁in ▁the ▁Middle ▁School , ▁and ▁ 1 5 0 ▁in ▁the ▁Lower ▁School . ▁A verage ▁class ▁size ▁is ▁ 1 6 , ▁and ▁the ▁overall ▁student / fac ulty ▁ratio ▁is ▁ 8 : 1 . ▁Of ▁the ▁ 1 3 2 ▁fac ulty ▁members , ▁ 8 0 ▁have ▁advanced ▁degrees , ▁including ▁ 9 ▁with ▁doctor ates . ▁As ▁of ▁ 2 0 1 8 , ▁ 3 0 ▁fac ulty ▁members ▁have ▁been ▁at ▁the ▁school ▁twenty ▁years ▁or ▁more . ▁There ▁are ▁ 2 2 ▁fully ▁end owed ▁fac ulty ▁positions , ▁including ▁ 1 6 ▁Master ▁Te aching ▁ch airs