Question:
Where was Gustave Choquet educated in May, 1935?

Context:
 Gustave Choquet attended École normale supérieure  (Paris) from Jan, 1934 to Jan, 1937. 
 Gustave Choquet attended Lycée Saint-Louis from Jan, 1933 to Jan, 1934. 
 Gustave Choquet attended Princeton University from Jan, 1938 to Jan, 1939.

Answer:
École normale supérieure  (Paris)