Universiteit Leiden

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Graduate School of Science


The Graduate School of Science offers PhD programmes spanning the entire spectrum of science ranging from Mathematics to Environmental Science.


The Graduate School of Science operates under the supervision of the Faculty Board. Professor Eric Eliel is Dean of the Graduate School of Science. The Dean is supported by the Graduate School Office.

Facts and Figures

The Faculty of Science was established in 1815 and is currently home to about 654 PhDs and 318 Guest PhDs. The total number of students at the Faculty of Science is 5800, of whom about 3500 BSc students and 2300 MSc students. 

International environment

An appreciable number of PhD candidates comes from abroad and the same applies to the scientific staff and the post-doctorate fellows. English is the language of the courses, the colloquia, the scientific meetings and the daily conversations in the research groups. 

Academic environment

The Graduate School of Science provides an academic environment with seminars, workshops, performances, exhibitios as well as opportunities for dialogue, quiet study, and focused experimentation. There are close collaborations with for example the Leiden Medical Centre (LUMC) , companies situated in the Leiden Bioscience Park and TU Delft.
The Graduate School of Science will offer PhD candidates a position for 4 years to do independent research, to follow advanced courses and develop personal skills, and finally defend their PhD thesis.

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