Universiteit Leiden

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Graduate School of Science


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

Facts and Figures

The Faculty of Science was established in 1815 and is currently home to about 430 PhD's and 315 Guest PhD's. The total number of students at the Faculty of Science is 3500, of whom about 2200 BSc students and 1300 MSc students. The percentage of BSc students who graduated nominally in the class off 2014/2015 is 52%.  For MSc students that percentage is 43%. 

International environment

An appreciable number of MSc students and 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.
Those MSc students that perform excellently are stimulated to enroll in one of the PhD Programmes. 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.


The Graduate School of Science operates under the supervision of the Faculty Board. The Dean of the Faculty of Science, Professor Geert de Snoo, is also Dean of the Graduate School of Science.