UDavid S. uneM.Sc. kwiYunivesithi yaseBritish Columbia, Khanada, kwaye wayengoyena mncinane kwaye engomnye wabahlohli abafunwa kakhulu kwiDyunivesithi phambi kokujoyina iReach Out. Upapashe iindidi zemisebenzi kwiijenali zenzululwazi. Uye waphuhlisa ikharityhulamu eVancouver iminyaka kwaye ufundisa i-SSAT, SAT, AP, IB, ibhayoloji, ikhemistri, i-physics, izifundo zezibalo nenzululwazi. Ukongeza kwisiNgesi, uthetha isiJamani, IsiSwidi kunye nesiTshayina. Unendlela yokufundisa eyonwabisayo neyonwabisayo kwaye uyabakhuthaza abafundi bakhe ngokuthanda kwakhe.