Ida May Schottenfels graduated from Northwestern University with a Bachelor of Arts degree in 1892. She then studied at Yale and the University of Chicago, earning a Masters degree in mathematics from Chicago in 1896. She taught mathematics at high schools in Chicago, the New York Normal College, and Adrian College in Michigan. In their study of "Women in the American Mathematical Research Community: 1891-1906" Fenster and Parshall cite Schottenfels as one of the two most "active" participants (along with Charlotte Angas Scott), listing her as giving 17 talks at mathematics conferences, publishing 3 papers, and attending 23 meetings and/or colloquia including those of the American Mathematical Society. Two of her published papers were
"Two non-isomorphic simple groups of same order 20,160", The Annals of Mathematics, 2nd Series, Vol. 1, No. 1/4 (1899-1900), 147-152. [Abstract]
"Note on the necessary condition that two linear homogenous differential equations shall have common integrals," The American Mathematical Monthly, Vol. 10, No. 12 (Dec. 1903), 257-259. [Abstract]
Fenster, Della Dumbaugh and Karen Parshall. "Women in the American mathematical research community: 1891-1906," The History of Modern Mathematics, Vol.3: Images, Ideas, and Communities, Eberhard Knobloch and David E. Rowe (eds.), 229-261.
Siegel, Joan and Kay Thomas Finley. Women in the Scientific Search: An American Bio-bibliograhy 1724-1979, Scarecrow Press, 1985, p216-217.