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End of Drop/Add Period
Wednesday, January 28, 2026 All day
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https://calendar.colgate.edu/event/end-of-dropadd-period
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Drop/Add period for full-term and first-half-of-term courses ends at 4:30 p.m.Please see Drop/Add webpage for information
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Feb 13
All day
First-Half-of-Term Courses: Withdrawal and S/U Grade Option Deadlines
Academics
Last day to withdraw from first-half-of-term course (with a W) and last day to declare the S/U grade mode for first-half-of-term courses.Please see the registrar's website for forms.
Feb 18
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Anne Fausto-Sterling Lecture
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The Robert H.N. Ho Mind, Brain, and Behavior Initiative's 2025-2026 speaker series "Biased Minds, Biased Brains, Biased Behaviors" continues with a lecture by Anne Fausto-Sterling, the Nancy Duke Lewis Professor Emerita of Biology and Gender Studies at Brown University.Professor Fausto-Sterling is a leading expert in biology and gender development. Her theoretical innovation, dynamic systems theory, explains how cultural difference becomes bodily difference. By applying a dynamic systems approach to the study of human development, her work exposes the flawed premise of the nature versus nurture debate.
Mar 6
All day
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Academics
Last day for sophomores to declare a major.
Mar 6
All day
First-Half-of-Term Courses End
Academics
Mar 9
All day
Second-Half-of-Term Courses Begin
Academics
First day of second-half-of-term courses
Mar 11
4:30 PM
J. Aislinn Bohren Lecture
Academics | Persson Hall, 27
The Robert H.N. Ho Mind, Brain, and Behavior Initiative's 2025-2026 speaker series "Biased Minds, Biased Brains, Biased Behaviors" continues with a lecture by J. Aislinn Bohren, associate professor of economics at the University of Pennsylvania.Professor Bohren's research focuses on various topics in microeconomics with a focus on information, learning, belief biases, and discrimination.