Bayan da ya yi aiki tare da Sojan Ruwa, Armstrong ya koma Purdue. Ya da kyau a baya samu amma ba fice maki yanzu inganta, dagawa karshe Grade Point Average (GPA) zuwa mai daraja amma ba fice 4.8 daga 6.0. Ya yi alkawari da Phi Delta Theta fraternity, kuma ya rayu a cikin fraternity gidan. Ya rubuta da kuma co-directed biyu musicals a matsayin wani ɓangare na dukan dalibi gangamin. Na farko shi ne wani version na Snow White da Bakwai Dwarves, co-directed tare da budurwa Joanne Alford daga Alpha Omega sorority, tare da songs daga Walt Disney fim, ciki har da Karen Kawo Someday Prince; na biyu da aka mai suna The Land of Eglo ("college" rubuta baya), tare da music daga Gilbert da kuma Indiana Edwards.
Yuni na shekarar 1961