Question:
Where was Esther Ballou educated in Apr, 1935?

Context:
 Esther Ballou attended Bennington College from Jan, 1933 to Jan, 1937. 
 Esther Ballou attended Juilliard School from Jan, 1940 to Jan, 1943. 
 Esther Ballou attended Mills College from Jan, 1937 to Jan, 1938.

Answer:
Bennington College