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Course and exam enrolment

Compulsory for all components

You must enrol for all components of your study programme, such as lectures, seminars and exams. This applies to both compulsory elements and elective credits. If you are not enrolled, you may not participate. 


Are you an exchange student, are you following a pre-master programme, or are you following courses whilst being registered at another Dutch university? If so, different enrolment procedures apply. You will receive further information by email.

Plan and enrol via MyStudymap

You can enrol via MyStudymap. In this system you can also plan your enrolments in advance. This means you can plan everything in your own time, then submit all your course enrolments in one go at the start of the enrolment period. Please note: your enrolment plan is not an actual enrolment and does not guarantee you a place. 

How does it work?

Read the explanation and FAQ about planning and enrolling in MyStudymap.



Academic year 2022-2023
For which semester Who When
Second semester Bachelor & master From 15 November 2022 at 13.00


Academic year 2022-2023
For which semester Who When
Second semester Bachelor From 13 December 2022 at 13.00
Master From 14 December 2022 at 13.00


You can find the enrolment deadlines for each course in the prospectus. For most courses, you can enrol till maximum 14 days before the course is due to start. 

Busy periods: ticket system

During busy periods, MyStudymap makes use of a ticket system to prevent the system becoming overloaded. This works as follows: 

  • When you access MyStudymap, you will be put on a waiting list. You can see your place on the waiting list and an estimate of how long you will have to wait. You can also set up an email alert to notify you when it's your turn. 
  • Once it's your turn, you will have ten minutes in which to log in. If you don't log in, you will be allocated a new place on the waiting list. 
  • Once you are logged in, you can go ahead with your planning and enrolment.

Status of your enrolments

On the status screen in MyStudymap you can see if your enrolment has been successful. If so, you will be given access to the course environment in Brightspace and the course will appear in your personal timetable in MyTimetable. Please note: it can become very busy at the start of the enrolment period so you may have to wait a couple of hours for your enrolment to be processed.

Exams: confirm participation 

If you enrol for an exam (or an exam component) this is only a so-called pre-enrolment. You must also confirm participation in MyStudymap. You can enrol and confirm participation till maximum 10 days before the exam (or exam component) date. You will receive a reminder to do so. If you do not confirm participation, you may not take the exam. 


Enrolling for Courses via MyStudyMap


For lectures, tutorials and exams you have to register in time via MyStudymap. Not being registered for a course can mean that you are not allowed to participate in the final exams of the course. By registering for an exam, you receive a so-called preregistration. You must confirm your participation in an exam in the student portal between thirty and ten days before the exam takes place. You will be notified of this. If you do not confirm your participation in time, you cannot participate in the exam.

If you see the code 101 on an exam, it refers to the regular exam. If it says 901 then it refers to a retake. 501 refers to a non-graded test.

If there are more groups these numbers could be 101, 102 etc.

All students are required to register for all lectures, tutorials and exams. Exceptions are:

  • First-year students: As a new first-year student you do not have to register for the courses (and components) of the first semester. This is done for you by the programme together with the student administration.
  • Students following the program LST: For LST students, registration is done via the Delft system.
  • Master students: As an exception, there is no pre-registration for academic year 2022-2023. Registration is still required, but not yet before the start of a course. Note: registration for exams is required, though
  • Minor: For the courses and activities that are part of the minor program, you will be registered by the programme, after being assigned by the programme, in cooperation with the student administration. This applies to the FWN-minors.
  • Premaster: You must register for the courses you must follow in uSis with classnumbers
  • Guest Students with Proof of Paid Tuition Fees: You must register for the courses you must follow in uSis with classnumbers

Planning your study
Before the registration period opens, you can plan your studies for the coming semester in MyStudymap. From this planning you can register for all courses at once when registration starts. Read more about the difference between planning and enrolling.

Note on abbreviations in MyStudyMap (uSis)
catalogue no. + H = Lecture or seminar (LEC)
catalogue no. + W = Workgroup or labwork (LAB)
catalogue no. + T = Exam or retake (TEN)
catalogue no. + X = Other assessment method  (paper, groupwork) (OVG)

Enrolling for courses via uSis

Are you a student of one of these categories then you cannot enroll for courses via MyStudyMap. You must enroll via uSis.

Manual for enrolling in uSis for courses with the help of Classnumbers.

If you want to enroll for a course and do not know what the classnumbers are, then you can send an email to FWNstudentsupport@science.leidenuniv.nl . Please give your studentnumber, study and a link to the course in the E- prospectus. We will provide you with the necessary information.




Below you see the various Minor of the Science Faculty and the classnumbers for the courses. You can use these to enroll for courses via uSis.

It is possible that the minor is already part of you requirements if you are a regular student in Leiden. Then you can also enroll via MyStudyMap.

Here is a manual that will help you to enroll for courses in uSis with classnumbers

Minor Biodiversity

Minor Computational Approaches to Disease, Signaling and Drug Targets

Minor Cyber Security Governance Essentials

Minor Data Science and Artificial Intelligence

Minor Human Evolution

Modern Drug Discovery

Minor Molecular Biotechnology

Minor Quantitative Biology

Minor Science, Business and Innovation

Minor Sustainable Chemistry and Biotechnology

Meer informatie over minoren vind je hier.


Sometimes you need to hand in a transcript of Grades at (for instance) another university?

You can request one by sending an email to  Transcript@science.leidenuniv.nl. In the subject line, please mention you studentnumber and study for which you request the list.


Course and exam enrolment Computer Science 2022-2023

To participate in courses, registration for courses, exams and retakes by using the MyStudyMap enrolment tool is required. There are two registration periods a year: registration for the Fall semester opens in July and registration for the Spring semester opens in December.

MyStudyMap: Planning and enrolling

Planning your studies and enrolling through MyStudyMap are two successive steps that you have to go through. 
More information about how to enrol in courses, exams and retakes via MyStudyMap can be found in the online manual and FAQ.

Important notes:

  • New incoming students can only plan their studies and enrol in courses through MyStudyMap if their Leiden University registration for the Master Computer Science is completed.
  • As an exception, there is no pre-registration for Science Faculty master's students during academic year 2022-2023. This means that the enrolment period does not close before the start of the semester or the start of a course.
    However, please note that registration and confirming participation in exams/retakes is still required.
  • By enrolling in an exam/retake, you receive a so-called pre-registration. You must confirm your participation in an exam/retake through MyStudyMap no later than 10 days before the exam or retake takes place. You will get a notificiation to confirm your final exam participation. If you do not confirm your participation in time, you cannot participate in the exam.
  • Do not confirm participation in retakes automatically. Only confirm your enrolment in a retake after not passing the exam. 

Note on the Master Computer Science catalogue numbers and abbreviations in MyStudyMap:

  • Catalogue no. + H = Lecture or seminar
  • Catalogue no. + W = Workgroup or practical 
  • Catalogue no. + T = Exam or retake 
  • Catalogue no. + O or X = Other assessment method (e.g. assignments, paper or report) with fixed, 'artificial' submission dates in uSis. Final submission deadlines will be announced by the lecturer during class and via Brightspace
  • Other important numbers in MyStudyMap:
    • If you see number 101 added to an exam, it refers to a regular exam (first attempt). If 901 is added, then it refers to a retake/resit (second attempt).
    • For some courses, there are multiple workgroups/practicals scheduled. If this is the case, then you see numbers running from 101, 102 etcetera. Students need to sign up for a workgroup/practical by choosing only one of the numbers listed in MyStudyMap.

MyStudyMap: Questions and troubleshooting

Do you have a question about planning and enrolling via MyStudyMap? Take a look in the online manual and FAQ.

For troubleshooting, please contact the Support Team through FWNstudentsupport@science.leidenuniv.nl. Make sure to include your student number, study programme, the course you want to enrol in through MyStudyMap and a brief description of the problem.

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