Ta koma Dutsen Holyoke a shekara ta 1872, tana koyar da ilmin lissafi da kuma tarihin halitta kafin ta zama malamin wasan motsa jiki na kwalejin daga 1876 zuwa 1891.Clapp ta ci gaba da karatun digiri na biyu a makarantar Louis Agassiz Anderson na Tarihin Halitta a Penikese Island, Buzzard's Bay, MA a 1874. Ta dauki maganganun Agassiz na "Nazarin yanayi, ba littattafai ba!" kuma ta yi amfani da ita ga koyarwarta.Ta gabatar da iliminta ta hanyar karatun ilimin halitta a Dutsen Holyoke, wanda aka maye gurbinsu da samfurori daga tsofaffin ɗalibai a ƙasashen waje.Tare da sauran masana kimiyyar New England, Clapp sun tattara kwari daga White Mountains na New Hampshire a lokacin rani na 1875 da kuma daga jihohin tsakiyar Atlantic a 1877. (Stops sun hada da tashar Johns Hopkins a Beaufort, da kuma Smithsonian Institution a Washington D.C.)
New Hampshire