In the early 1930s, Silberschlag taught at the
Jewish Institute of Religion and at the Teachers Institute of the
Jewish Theological Seminary. He published his first volume of poetry,
Bi-shevilim bodedim, in 1931. He also edited, along with
Aaron Zeitlin, several volumes of the Hebrew
quarterly ''''. Silberschlag joined the faculty of
Hebrew College in 1944, rising to become
dean, in which role he oversaw the college's
accreditation from the
New England Association of Schools and Colleges, and then
president. Silberschlag was a candidate to succeed
Joseph Klausner as
chair of modern
Hebrew literature at the
Hebrew University upon the latter's retirement, but remained in the United States when
Simon Halkin was hired in this position. After his retirement and the death of his wife Milkah, Silberschlag moved from
Boston to
Austin, Texas, where he was appointed professor of
Hebrew literature at the
University of Texas at Austin. During this period he also served as president of the
National Association of Professors of Hebrew. ==Published works==