Universiteit Leiden

nl en

Course and exam enrolment

You can enrol for courses and exams via uSis or your faculty's education administration office.

Take a look under your faculty or study programme tab for further information. If you have any questions, please contact your education administration office


Do you have a question about uSis? If so, please consult our FAQs or send a mail to the uSis web editors

Course and exam enrolment

If you want to take a certain subject and / or examination (including re-sits), you have to register via uSis in a classnumber.  Mostly these classnumbers refers to an EXAMINATION, but you are kindly asked to enroll as soon as you plan to follow a course. Then the coordinator can use the list of enrolled students as an indication of the number of students that can be expected in the group. Find the numbers you need by choosing your Bsc of Msc programme in the menu below or by the TAB that indicates the study programme. To change the study programme, fill in your choice on the upper right hand side of the screen.

Useful tips:

Classnumbers Bachelor Programmes 2017-2018

Astronomy - check the Exam Schedule on the Astronomy information page 

Bio-pharmaceutical Sciences -  year 1   /  year 2  /    year 3

Biology - the information is available via the E-guide (right hand side - check the 'usiscodelijst')

Computer Science (24-2-2018)

Computer Science and Biology (24-2-2018)

Computer Science and Economics (24-12-2018)

Mathematics (11-1-2018)

Molecular Science and Technology (30-8-2017)

Physics: - check the Exam Schedule on the Physics information page


back to top

Classnumbers Master Programmes 2017-2018

Choose the programme you want to select a course from:
NOTE: If you want to select a bachelor course, check the Section “Bachelor Programmes”

Astronomy 2017-2018  - check the Astronomy Information pages

For now you can find the Astronomy-Physics classnumbers here

Bio-Pharmaceutical Sciences 2017-2018  (12-1-2018)
BPS - Research Projects (20-9-2017)

Biology - 2017-2018

the information is  available via the E-guide (right hand side - check 'Registration in uSis and Codes')

Computer Science 2017-2018  - 1 March 2018

Chemistry and LST 2017-2018  - 24 May 2018

ICT in Business and the Public Sector 2017-2018    14-3-2018

>>post-Experience (evening classes)

Industrial Ecology 2017-2018 - 4-9-2017
check the links on the right hand side of the IE-page

Media Technology 2017-2018  - 9-4-2018

Mathematics 2017-2018  - - --- 5-4-2018

Statistical Science for the Life and Behavioural Sciences 2017-2018  10-12-2017

Physics 2017-2018 - Check the Physics Information Pages For now you can find the Astronomy-Physics classnumbers here

Specialisation Science Communication and Society

The SCS specialisation programme comprises a number of courses. Find HERE the classnumbers you need to enroll for the examination of grade-registration.

Specialisation Science Based Business

Find HERE the classnumbers you need to enroll for the examination of grade-registration.


Any questions about the contents of studies in the next year? Please check the E-study guide first and then the website of your study program. Finally contact your study advisor.

back to top

Minors 2017-2018

For the following minors you can still enroll for one or more exams

Data Science

Computational Approaches to Disease, Signaling and Drug Targets

Modern Drug Discovery (24042018)


Minors 2018 - 2019

The information about the minors is available on the Minor- website of Leiden University.

The 'Science' minors are:

Title minor EC uSis code class number

Advanced Life Science and Technology

30 4000MALSTN 1270
Biodiversity and Natural Environment 30 4000MBDNEN 1271
Data Science  30 4000MDASCN 1272
Computational Approaches to Disease, Signaling and Drug Targets 30 4000MCOADN 1273
Human Evolution 30 4000MHUEVN 1275
Modern Drug Discovery 30 4000MMODDN 1276
Molecular Biotechnology 30 4000MMBION 1277
Quantitative Biology 30 4000MQBION 1278
Science and Research-Based Business 30 4000MSRBBN 1279
Sustainable Development 30 4000MDONTN 1280

Geo-Resources for the Future (Delft TA-MI-192-17) 

30 4000MGEORN 1274

The following minors also offer an opportunity to only follow 15EC:

Title uSis Code number of EC deadline for entry Classnumber
Biodiversity and Natural Environment 4000KBDNEN 15 15 June 1297
Part 1: CADSDT 4000KCAD1N 15 15 june 1298
Part 2: CADSDT 4000KCAD2N 15 15 June 1299
Human Evolution 4000KHUEVN 15 15 June 1300
Molecular Biotechnology 4000KMBION 15 15 June 1301

Science Based Business: Management Courses S1

4000KSBB1N 15 1 August 1838
Science Based Business: Management Courses S2 4000KSBB3N 15 1 August 6936
Science Based Business:  Entrepreneurship Courses 4000KSBB2N 15 1 August 1839
Sustainable Development part 1: Big Issues New Answers 4000KBINAN 15 15 June 4981

Science Based Business 1: Management Courses S2

4000KSBB3N 15 1 August 6936

After you are admitted to a minor you should also enroll for the examinations of the courses in the minor. If the classnumbers are available, the name of the minor is marked as a hyperlink.

For the courses of the minors 'Advanced Life Science& Technology' and 'Geo-resources for the future' you must be registered as a (guest)student in Delft and register in the system of the Delft University (Osiris).  

back to top



Honours College Beta and Life Sciences 2017-2018


Classnumbers 2017-2018 (5-2-2018)

back to top




Courses offered by the Faculty of Science

Every year a number of courses are not offered by a specific institute or study but by the Faculty of Science

In 2016-2017 the following courses are on offer:

For Bachelor (and sometimes Master students)

  • Complex Networks
  • Keerpunten in de geschiedenis van de natuurwetenschappen
  • On being a scientist

For Master students

  • Science and the Public
  • Science Methodology

Class numbers to sign up in uSis (5 February 2018).

back to top

Transcript of Records

If you need an authenticated Transcript of Records (NL: cijferlijst) from the Graduate School Office (Educatief Centrum), you can send an email to Transcript@science.leidenuniv.nl. Mention your studyprogramme in the subject-line and give the information that is asked for in the mail.

Please allow at least two days for processing your request.

back to top

Questions on uSis topics

Unable to logon to uSis? Here you can find more information on you ULCN account.

For other questions, mail your question to usis-fwn@science.leidenuniv.nl, quoting your name, student number and degree programme.

back to top

This website uses cookies. Read