▁for ▁Ex cell ence ▁in ▁Te aching ▁in ▁ 2 0 0 5 . ▁ ▁In ▁ 2 0 0 7 , ▁Pers ily ▁moved ▁to ▁Columbia ▁Law ▁School , ▁where ▁he ▁was ▁a ▁Professor ▁of ▁Law ▁from ▁ 2 0 0 7 ▁to ▁ 2 0 0 8 ▁and ▁the ▁Charles ▁K eller ▁Be ek man ▁Professor ▁of ▁Law ▁and ▁Professor ▁of ▁Political ▁Science ▁from ▁ 2 0 0 8 ▁to ▁ 2 0 1 3 . ▁ ▁Pers ily ▁joined ▁the ▁Stan ford ▁Law ▁School ▁fac ulty ▁in ▁ 2 0 1 3 . ▁At ▁Stan ford , ▁Pers ily ▁teach es ▁courses ▁on ▁constitution al ▁law , ▁the ▁law ▁of ▁dem ocracy , ▁and ▁the ▁legal ▁reg ulation ▁of ▁the ▁political ▁process . ▁He ▁also ▁co - te aches ▁an ▁advanced ▁sem inar ▁on ▁law ▁and ▁politics ▁with ▁Good win ▁Li u , ▁Associ ate ▁Justice ▁of ▁the ▁California ▁Supreme ▁Court . ▁ ▁Due ▁to ▁his ▁expert ise ▁in ▁voting ▁rights , ▁Pers ily ▁has ▁also ▁served ▁as ▁a ▁court - app oint ed ▁expert ▁on ▁legisl ative ▁district ing ▁for ▁Georgia , ▁Maryland , ▁and ▁New ▁York , ▁and ▁in ▁ 2 0 1 2 , ▁was ▁appointed ▁by ▁the ▁Supreme ▁Court ▁of ▁Connecticut ▁as ▁a ▁special ▁master ▁for ▁red istrict ing ▁of ▁Connecticut ' s ▁con gression al ▁districts . ▁From ▁ 2 0 1 3 ▁to ▁ 2 0 1 4 , ▁Pers ily ▁served ▁as ▁a ▁Senior ▁Research ▁Director ▁for ▁the ▁President ial ▁Commission ▁on ▁E