stamp featuring Mary Lyon, in honor of Mount Holyoke's Sesquicentennial (Mount Holyoke's 150th anniversary).
=== Debate on becoming co-educational ===
In the early 1970s, Mount Holyoke had a long debate under the presidency of David Truman over the issue of coeducation. On November 6, 1971, the board of trustees voted to remain a women's college.
=== Admission of transgender students ===
At Convocation on September 2, 2014, President Lynn Pasquerella announced a new policy allowing the admission of transgender individuals of both sexes to the college, as well as the admission of students whose gender identities are non-binary. Of the Seven Sisters that had remained women's colleges, Mount Holyoke was the first to implement such policy.
== Admissions ==
The 2020 annual ranking by U.S. News & World Report categorizes Mount Holyoke as "more selective".
For the Class of 2028 (enrolling fall 2024), Mount Holyoke received 5,226 applications, accepted 1,881 (36%), and enrolled 532. The middle 50% range of SAT …
