Kadár took up the law in Bratislava after high school, but soon transferred to the first Department of Film in Czechoslovakia (probably the third such department in Europe) at the School of Industrial Arts in Bratislava in 1938, where he took classes with Slovak film's notable director Karel Plicka until the department was closed in 1939.
Kadár a urmat cursuri de drept la Bratislava după terminarea liceului, dar s-a transferat curând, în 1938, la primul Departament de Film din Cehoslovacia (probabil al treilea astfel de departament din Europa) de la Școala de Arte Industriale din Bratislava unde a urmat cursurile predate de celebrul regizor de film slovac Karel Plicka până când departamentul a fost închis în 1939.