Accepting an Offer of Admission Admitted students will be notified by email in March. To accept an offer of admission, you must submit a decision online to the Graduate School no later than April 15th. Please visit Princeton Graduate Admission for detailed instructions on accepting your offer of admission. For international students, please visit the Davis International Center for instructions on fulfilling U.S. immigration requirements. Summer Arrivals For students wishing to begin their graduate studies earlier than September, the Department of Molecular Biology offers a summer lab rotation. This rotation begins on July 1st and ends on August 31st. Stipend support for housing and living expenses is available. Students are encouraged to contact the faculty member with whom they would like to perform a summer rotation to arrange a position and to inform the department as soon as possible. Departmental Retreat The Department hosts an annual retreat to allow first year graduate students the opportunity to meet faculty, socialize with other members of the department, and attend talks presented by more senior graduate students and postdocs. This event takes place in September or October and is mandatory for first year students.