After World War I much of the land that had been part of Hungary was given to neighbouring countries and at that time Cluj became part of Romania. Wald was allowed to attend the University of Cluj but it appears that this was not made easy for him because he was Jewish. However his outstanding abilities in mathematics led him to wish to continue to undertake mathematical research and in 1927 he entered the University of Vienna to study with Karl Menger .
Pagkatapos ng World War ko marami ng lupa na may been bahagi ng Hungary ay ibinigay sa mga karatig bansa at sa oras na iyon Cluj ay naging bahagi ng Romania. Wald ay pinahihintulutan na dumalo sa University of Cluj ngunit ito ay lilitaw na ito ay hindi ginawa madali para sa kanya dahil siya ay Hudyo. Subalit ang kanyang natitirang kakayahan sa matematika na humantong sa kanya na nais mong patuloy na magsagawa ng matematika at pananaliksik sa 1927 siya ipinasok sa University of Vienna sa pag-aaral na may Karl Menger.